Post on 18-Aug-2021
MINISTRY OF AGRICULTURE LAND AND FISHERIES
RESEARCH DIVISIONCENTRAL EXPERIMENT STATION
CENTENO
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL
Seim
Varieties Grown in Trinidad and Tobago
(Lablab purpureus L. Sweet.)
Seim (Lablab purpureus L. Sweet.)
Varieties Grown in Trinidad and Tobago
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL
Researched by the Vegetables Unit, Research Division, Ministry of Agriculture, Land and Fisheries.
Written by: Albada Beekham, Deputy Director
Contributors/Editors: Dale Nandlal, Director of Research, Cynthra Persad (Director, Retired),
Suenarine Persad (Technical Officer, Retired)
PhotographyAlbada Beekham, Richard Ramdin, Tamika Jackson, Zaheer Juman
Special Thanks to the
Staff of the Vegetables Unit
Richard Ramdin
Louis Farrell
Maywalal Samaroo
Zaheer Juman
Tamika Jackson
Shaana Nandlal
Krishna Sayneeram
Mark Fong Yit
Majorie Sawh-Walker
© Copyright 2017 All rights reserved. No part of this publication may be reproduced, stored in a retrieval
system, transmitted in any form without the written permission of the Research Division, Ministry of Agriculture, Land and Fisheries, Trinidad and Tobago.
DESIGN AND LAYOUT BY RAW DESIGNS
ii
PREFACE
This booklet was written to guide researchers, farmers and consumers on the different varieties of seim grown in Trinidad. This economically important legume crop is underutilized since very little information is available on its growth habit, yield and biochemical characteristics.
In 2006, Kamaldeo Maharaj (Director, Retired) and Susan Mootoo (Agricultural Officer I), initiated a collection exercise of seim varieties grown in Trinidad. Seeds of two (2) accessions were viable and used in this study. In 2007 the Vegetables Unit, Research Division, began a characterization project to collect and evaluate lines found in Trinidad. By 2009, the Vegetables Unit had collected 15 accessions, three of which were duplicates.
This project to study, evaluate and characterize the twelve (12) accessions was completed in 3 years. All of the accessions were established and characterized based on physical characters e.g. flowering pattern, weekly yield data, colour of flower and colour of pods. Additionally, biochemical data was also obtained on sweetness, crude fiber and protein content.
Images showing the plant, flowers and pods as well as graphs of the harvest data of each variety can be used to help farmers in selecting the appropriate variety for production. Breeders and researchers may also use this booklet in the development of new varieties.
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL iii
INTRODUCTION
Lablab purpureus (L.) Sweet or Seim as it is commonly called in Trinidad and Tobago is referred in other parts of the world as hyacinth bean, lablab bean, Indian bean, Egyptian kidney bean and lubia bean. Other synonyms include: Dolichos benghalensis Jacq., Dolichos lablab L., Dolichos purpureus L., Lablab niger Medikus, Lablab purpurea (L.) Sweet, Lablab vulgaris (L.) Savi, Vigna aristata Piper.
The center of origin of Seim is South Asia and Africa however over 200 genotypes are found worldwide. These varieties differ in pod colour, pod shape, pod size, seed shape, seed colour, flower colour, flower abundance, leaf shape, leaf size, hairiness, vine colour, plant growth habit and sensitivity to day length. Its introduction into Trinidad is uncertain but it is assumed to have arrived with the indentured workers from India in the late 1800’s.
Although twelve (12) varieties were collected in Trinidad, only three (3) are grown commercially by farmers.
This crop is very adaptable and survives well in diverse conditions, for example: arid, semi-arid and humid regions, warm-temperate, subtropical and humid rainforest regions, lowlands and highlands (up to 2,100m altitude). It can be grown well in soils ranging from 4.4 to 7.8 pH. For this study, all twelve varieties were planted in June (rainy season).
In Trinidad, the immature and mature pods are harvested and cooked as a green vegetable. Other green leguminous vegetables grown and eaten in Trinidad include bodi (Vigna sp.) and green beans (Phaseolus). Seim however has a very distinctive and characteristic smell and taste and retails for as much as 27.00TTD/kg (NAMDEVCO 2016). In other parts of the world, it is also used as a grain legume, a forage, an ornamental and as a green manure. Farmer saved seeds are normally used to multiply this crop. Increasing demand and crop value has led to expanded production.
This study is intended to guide production with respect to selection of varieties towards increasing yield while maintaining or improving nutritional content.
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL v
Preface iii
Introduction v
Graphs and Photographs vii
Variety LL01 10 - 11
Variety LL02 12 - 13
Variety LL03 14 - 15
Variety LL04 16 - 17
Variety LL05 20 - 21
Variety LL07 22 - 23
Variety LL08 24 - 25
Variety LL11 26 - 27
Variety LL13 30 - 31
Variety LL14 32 - 33
Variety LL15 34 - 35
Variety LL17 36 - 37
Summary of Varieties 38 - 39
References 40
CONTENTS
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL vii
GRAPHS AND PHOTOGRAPHS
Variety LL01 10
Variety LL02 12
Variety LL03 14
Variety LL04 16
Variety LL05 20
Variety LL07 22
Variety LL08 24
Variety LL11 26
Variety LL13 30
Variety LL14 32
Variety LL15 34
Variety LL17 36
The Seim is a domesticated pulse and multi-purpose crop, it is cited as forage for livestock, a medicinal plant and a poisonous plant.
VARIETY: LL01 VARIETY: LL02
VARIETY: LL03 VARIETY: LL04
10 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
0 5 10 15 20 25 30 35 40
Duration of harvest (week)
Yield
(g)
1800
1600
1400
1200
1000
800
600
400
200
0
Average Yield / week - LL01
VARIETY: LL01
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 11
Growth pattern INDETERMINATE
Plant pigmentation NONE
Plant hairiness SLIGHT
Vine colour LIGHT GREEN
Twining tendency PRONOUNCED
Flower colour-standard CREAM
Flower colour-keel CREAM
Flower colour-wing CREAM
Days to 1st harvest 117 days
Duration of harvest 196 days
Pod description SHORT AND NARROW
Immature pod pigmentation NONE
Pod colour (mature) LIGHT GREEN
Avg. Pod length (mm) 86.01 ± 0.47
Avg. Pod width (mm) 12.4 ± 0.07
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature CURVED
Avg. Yield/Plant (kg) 10 ± 0.7
Avg. no. seeds/pod 5
Pod colour (dry) DARK TAN
Seed colour LIGHT BROWN
Seed shape OVIOD
Testa texture SMOOTH
Avg. 100 seed weight (g) 27.22
Protein (% w/w) 4.5
Total Invert Sugars (% w/w) 0.76
Crude Fiber (% w/w) 2.54
Total Cyanide (mg/kg) 0.48
Free Cyanide (mg/kg) 0.15
VARIETY: LL01MORPHOLOGICAL AND BIOCHEMICAL DATA
Duration of harvest (week)
1000900800700600500400300200100
0
Yield
(g)
0 5 10 15 20 25 30 35
Average Yield / week - LL02
12 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
VARIETY: LL02
VARIETY: LL02
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 13
Growth pattern INDETERMINATE
Plant pigmentation NONE
Plant hairiness SLIGHT
Vine colour LIGHT GREEN
Twining tendency PRONOUNCED
Flower colour-standard WHITE
Flower colour-keel WHITE
Flower colour-wing WHITE
Days to 1st harvest 68 days
Duration of harvest 203 days
Pod description BROAD AND FLAT
Immature pod pigmentation NONE
Pod colour (mature) LIGHT GREEN
Avg. Pod length (mm) 91.43 ± 1
Avg. Pod width (mm) 12.41 ± 0.36
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature SLIGHTLY CURVED
Avg. Yield/Plant (kg) 11.8 ± 2.2
Avg. no. seeds/pod 5
Pod colour (dry) PALE TAN OR STRAW
Seed colour LIGHT BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 32.3
Protein (% w/w) 3.33
Total Invert Sugars (% w/w) 1.26
Crude Fiber (% w/w) 1.53
Total Cyanide (mg/kg) 0.74
Free Cyanide (mg/kg) 0.05
MORPHOLOGICAL AND BIOCHEMICAL DATA
Duration of harvest (week)
600
500
400
300
200
100
0
Yield
(g)
0 5 10 15 20 25 30 35
Average Yield / week - LL03
14 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
VARIETY: LL03
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 15
Growth pattern INDETERMINATE
Plant pigmentation NONE
Plant hairiness SHORT APPRESSED HAIRS
Vine colour LIGHT
Twining tendency PRONOUNCED
Flower colour-standard CREAM
Flower colour-keel CREAM
Flower colour-wing CREAM
Days to 1st harvest 68 days
Duration of harvest 203 days
Pod description SHORT AND NARROW
Immature pod pigmentation NONE
Pod colour (mature) LIGHT GREEN
Avg. Pod length (mm) 75.01 ± 0.73
Avg. Pod width (mm) 15.18 ± 0.2
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature CURVED
Avg. Yield/Plant (kg) 6.2 ± 1.1
Avg. no. seeds/pod 5
Pod colour (dry) DARK TAN OR STRAW
Seed colour LIGHT BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 28.8
Protein (% w/w) 4.02
Total Invert Sugars (% w/w) < 0.003
Crude Fiber (% w/w) 1.21
Total Cyanide (mg/kg) 1.20
Free Cyanide (mg/kg) 0.63
VARIETY: LL03MORPHOLOGICAL AND BIOCHEMICAL DATA
Duration of harvest (week)
1400
1200
1000
800
600
400
200
0
Yield
(g)
0 5 10 15 20 25 30 35
Average Yield / week - LL04
16 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
VARIETY: LL04
VARIETY: LL04
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 17
Growth pattern INDETERMINATE
Plant pigmentation GREEN WITH SOME PURPLE
Plant hairiness NONE
Vine colour MIXED GREEN AND PURPLE
Twining tendency PRONOUNCED
Flower colour-standard MAUVE
Flower colour-keel CREAM WITH PURPLE TIP
Flower colour-wing MAUVE
Days to 1st harvest 75 days
Duration of harvest 203 days
Pod description BROAD AND FLAT
Immature pod pigmentation NONE
Pod colour (mature) LIGHT GREEN
Avg. Pod length (mm) 79.2 ± 0.47
Avg. Pod width (mm) 25.02 ± 0.12
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature SLIGHTLY CURVED
Avg. Yield/Plant (kg) 16.7 ± 1.3
Avg. no. seeds/pod 5
Pod colour (dry) PALE TAN OR STRAW
Seed colour RED BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 31.07
Protein (% w/w) 3.08
Total Invert Sugars (% w/w) < 0.003
Crude Fiber (% w/w) 1.30
Total Cyanide (mg/kg) 0.50
Free Cyanide (mg/kg) 0.23
MORPHOLOGICAL AND BIOCHEMICAL DATA
Seim leaves can be eaten raw or cooked like spinach. The flowers can be eaten raw or steamed. The root can be boiled or baked for food. The seeds are used to make tofu and tempeh.
VARIETY: LL05 VARIETY: LL07
VARIETY: LL08 VARIETY: LL11
20 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
Duration of harvest (week)
Yield
(g)
Average Yield / week - LL052500
1200
1000
800
600
400
200
0
0 5 10 15 20 25 30 35
VARIETY: LL05
VARIETY: LL05
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 21
Growth pattern INDETERMINATE
Plant pigmentation PURPLE BY NODES
Plant hairiness SHORT APPRESSED HAIRS
Vine colour MIXED GREEN AND PURPLE
Twining tendency PRONOUNCED
Flower colour-standard MAUVE
Flower colour-keel MIXED GREEN AND PURPLE
Flower colour-wing VIOLET
Days to 1st harvest 68 days
Duration of harvest 203 days
Pod description NARROW AND SHORT
Immature pod pigmentation NONE
Pod colour (mature) LIGHT GREEN
Avg. Pod length (mm) 79.93 ± 0.58
Avg. Pod width (mm) 17 ± 0.14
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature SLIGHTLY CURVED
Avg. Yield/Plant (kg) 15.6 ± 1.1
Avg. no. seeds/pod 5
Pod colour (dry) PALE TAN OR STRAW
Seed colour RED BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 27.98
Protein (% w/w) 3.57
Total Invert Sugars (% w/w) 0.20
Crude Fiber (% w/w) 1.72
Total Cyanide (mg/kg) 1.08
Free Cyanide (mg/kg) 0.86
MORPHOLOGICAL AND BIOCHEMICAL DATA
22 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
Duration of harvest (week)
Yield
(g)
Average Yield / week - LL072500
2000
1500
1000
500
00 5 10 15 20 25 30 35 40
VARIETY: LL07
VARIETY: LL07
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 23
Growth pattern INDETERMINATE
Plant pigmentation VERY SLIGHT
Plant hairiness SLIGHT
Vine colour MIXED GREEN AND PURPLE
Twining tendency PRONOUNCED
Flower colour-standard MAUVE
Flower colour-keel CREAM WITH PURPLE TIP
Flower colour-wing MAUVE
Days to 1st harvest 124 days
Duration of harvest 189 days
Pod description NARROW AND LONG
Immature pod PIGMENTEDpigmentation SUTURES
Pod colour (mature) DARK GREEN
Avg. Pod length (mm) 98.38 ± 0.33
Avg. Pod width (mm) 13.95 ± 0.11
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature SLIGHTLY CURVED
Avg. Yield/Plant (kg) 11.6 ± 0.8
Avg. no. seeds/pod 5
Pod colour (dry) DARK TAN
Seed colour RED BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 30.78
Protein (% w/w) 5.12
Total Invert Sugars (% w/w) 0.87
Crude Fiber (% w/w) 2.46
Total Cyanide (mg/kg) 0.32
Free Cyanide (mg/kg) 0.02
MORPHOLOGICAL AND BIOCHEMICAL DATA
24 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
Duration of harvest (week)
Yield
(g)
Average Yield / week - LL08700
600
500
400
300
200
100
00 5 10 15 20 25 30 35
VARIETY: LL08
VARIETY: LL08
Growth pattern INDETERMINATE
Plant pigmentation NONE
Plant hairiness SLIGHT
Vine colour GREEN
Twining tendency PRONOUNCED
Flower colour-standard CREAM
Flower colour-keel CREAM
Flower colour-wing CREAM
Days to 1st harvest 68 days
Duration of harvest 203 days
Pod description SHORT AND NARROW
Immature pod pigmentation NONE
Pod colour (mature) LIGHT GREEN
Avg. Pod length (mm) 77.88 ± 0.79
Avg. Pod width (mm) 14.58 ± 0.23
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature CURVED
Avg. Yield/Plant (kg) 6.5 ± 1.1
Avg. no. seeds/pod 5
Pod colour (dry) PALE TAN OR STRAW
Seed colour LIGHT BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 28.44
Protein (% w/w) 3.10
Total Invert Sugars (% w/w) 1.88
Crude Fiber (% w/w) 1.16
Total Cyanide (mg/kg) 0.34
Free Cyanide (mg/kg) 0.003
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 25
MORPHOLOGICAL AND BIOCHEMICAL DATA
26 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
Duration of harvest (week)
Yield
(g)
1800
1600
1400
1200
1000
800
600
400
200
00 5 10 15 20 25 30 35 40
Average Yield / week - LL11
VARIETY: LL11
VARIETY: LL11
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 27
Growth pattern DETERMINATE
Plant pigmentation EXTENSIVE
Plant hairiness SHORT APPRESSED HAIRS
Vine colour PURPLE
Twining tendency PRONOUNCED
Flower colour-standard MAUVE
Flower colour-keel CREAM WITH PURPLE TIP
Flower colour-wing PURPLE
Days to 1st harvest 124 days
Duration of harvest 189 days
Pod description BROAD AND FLAT
Immature pod PIGMENTED pigmentation SUTURES
Pod colour (mature) MIXED GREEN AND PURPLE
Avg. Pod length (mm) 92.19 ± 0.54
Avg. Pod width (mm) 18.92 ± 0.17
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature SLIGHTLY CURVED
Avg. Yield/Plant (kg) 5.9 ± 0.4
Avg. no. seeds/pod 5
Pod colour (dry) DARK TAN
Seed colour RED BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 27.49
Protein (% w/w) 3.88
Total Invert Sugars (% w/w) < 0.003
Crude Fiber (% w/w) 1.69
Total Cyanide (mg/kg) 0.54
Free Cyanide (mg/kg) 0.03
MORPHOLOGICAL AND BIOCHEMICAL DATA
Other common names include Tonga bean, papaya bean, poor man bean (Australia), Bounavista pea (Trinidad), and butter bean (Caribbean).
VARIETY: LL13
VARIETY: LL15
VARIETY: LL14
VARIETY: LL17
30 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
Duration of harvest (week)
Yield
(g)
350
300
250
200
150
100
50
0
0 5 10 15 20 25 30
Average Yield / week - LL13
VARIETY: LL13
VARIETY: LL13
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 31
Growth pattern INDETERMINATE
Plant pigmentation PRONOUNCED
Plant hairiness SLIGHT
Vine colour PURPLE
Twining tendency PRONOUNCED
Flower colour-standard MAUVE
Flower colour-keel CREAM WITH PURPLE TIP
Flower colour-wing MAUVE
Days to 1st harvest 68 days
Duration of harvest 196 days
Pod description BROAD AND SHORT
Immature pod pigmentation NONE
Pod colour (mature) PURPLE
Avg. Pod length (mm) 76.34 ± 0.64
Avg. Pod width (mm) 18.93 ± 0.17
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature CURVED
Avg. Yield/Plant (kg) 3.3 ± 0.3
Avg. no. seeds/pod 5
Pod colour (dry) TAN
Seed colour RED BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 26.65
Protein (% w/w) 2.51
Total Invert Sugars (% w/w) 1.26
Crude Fiber (% w/w) 0.97
Total Cyanide (mg/kg) 0.3
Free Cyanide (mg/kg) < 0.001
MORPHOLOGICAL AND BIOCHEMICAL DATA
32 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
Duration of harvest (week)
Yield
(g)
1600
1400
1200
1000
800
600
400
200
00 5 10 15 20 25 30 35 40
Average Yield / week - LL14
VARIETY: LL14
VARIETY: LL14
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 33
Growth pattern INDETERMINATE
Plant pigmentation EXTENSIVE
Plant hairiness NONE
Vine colour PURPLE
Twining tendency PRONOUNCED
Flower colour-standard MAUVE
Flower colour-keel CREAM WITH PURPLE
Flower colour-wing MAUVE
Days to 1st harvest 103 days
Duration of harvest 210 days
Pod description NARROW AND LONG
Immature pod PIGMENTEDpigmentation SUTURES
Pod colour (mature) MIXED GREEN AND PURPLE
Avg. Pod length (mm) 99.91 ± 0.71
Avg. Pod width (mm) 11.34 ± 0.06
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature SLIGHTLY CURVED
Avg. Yield/Plant (kg) 15.1 ± 1.1
Avg. no. seeds/pod 5
Pod colour (dry) DARK TAN
Seed colour RED BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 22.45
Protein (% w/w) 3.69
Total Invert Sugars (% w/w) < 0.003
Crude Fiber (% w/w) 1.85
Total Cyanide (mg/kg) 0.35
Free Cyanide (mg/kg) < 0.001
MORPHOLOGICAL AND BIOCHEMICAL DATA
34 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
Duration of harvest (week)
Yield
(g)
200018001600140012001000
800600400200
00 5 10 15 20 25 30 35
Average Yield / week - LL15
VARIETY: LL15
VARIETY: LL15
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 35
Growth pattern INDETERMINATE
Plant pigmentation NONE
Plant hairiness NONE
Vine colour GREEN
Twining tendency PRONOUNCED
Flower colour-standard CREAM
Flower colour-keel CREAM
Flower colour-wing CREAM
Days to 1st harvest 166 days
Duration of harvest 210 days
Pod description BROAD AND LONG
Immature pod pigmentation NONE
Pod colour (mature) LIGHT GREEN
Avg. Pod length (mm) 98.68 ± 0.84
Avg. Pod width (mm) 33.12 ± 0.37
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature SLIGHTLY CURVED
Avg. Yield/Plant (kg) 2.7 ± 0.9
Avg. no. seeds/pod 5
Pod colour (dry) PALE TAN OR STRAW
Seed colour BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 36.8
Protein (% w/w) 2.55
Total Invert Sugars (% w/w) 2.87
Crude Fiber (% w/w) 1.58
Total Cyanide (mg/kg) < 0.001
Free Cyanide (mg/kg) < 0.001
MORPHOLOGICAL AND BIOCHEMICAL DATA
36 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
Duration of harvest (week)
Yield
(g)
1600140012001000
800600400200
0
0 5 10 15 20 25 30 35
Average Yield / week - LL17
VARIETY: LL17
VARIETY: LL17
Growth pattern INDETERMINATE
Plant pigmentation NONE
Plant hairiness NONE
Vine colour GREEN
Twining tendency PRONOUNCED
Flower colour-standard MAUVE
Flower colour-keel WHITE
Flower colour-wing MAUVE
Days to 1st harvest 73 days
Duration of harvest 231 days
Pod description SHORT, DARK GREEN
Immature pod pigmentation NONE
Pod colour (mature) DARK GREEN
Avg. Pod length (mm) 78.52 ± 0.44
Avg. Pod width (mm) 15.22 ± 0.12
Pod attachment 30-90˚ DOWN to peduncle FROM ERECT
Pod curvature SLIGHTLY CURVED
Avg. Yield/Plant (kg) 22.6 ± 1
Avg. no. seeds/pod 5
Pod colour (dry) DARK TAN
Seed colour RED BROWN
Seed shape OVOID
Testa texture SMOOTH
Avg. 100 seed weight (g) 30.5
Protein (% w/w) 3.24
Total Invert Sugars (% w/w) 0.62
Crude Fiber (% w/w) 1.87
Total Cyanide (mg/kg) 0.02
Free Cyanide (mg/kg) < 0.001
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 37
MORPHOLOGICAL AND BIOCHEMICAL DATA
SUMMARY OF VARIETIES (Plant Data)
38 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
Days to Duration Total Free
1st of Protein Invert Sugars Fiber CyanideVariety Harvest Harvest (Days) Avg. Yield (kg) Pod Colour Pod Description (%w/w) (%w/w) (%w/w) (mg/kg)
LL01 117 196 10 ± 0.7 light green short, narrow 4.5 0.76 2.54 0.15
LL02 68 203 11.8 ± 2.2 light green broad, flat 3.33 1.26 1.53 0.05
LL03 68 203 6.2 ± 1.1 light green short, narrow 4.02 < 0.003 1.21 0.63
LL04 75 203 16.7 ± 1.3 light green broad flat 3.08 < 0.003 1.30 0.23
LL05 68 203 15.6 ± 1.1 light green short, narrow 3.57 0.2 1.72 0.86
LL07 124 189 11.6 ± 0.8 dark green long, narrow 5.12 0.87 2.46 0.02
LL08 68 203 6.5 ± 1.1 light green short, narrow 3.10 1.88 1.16 0.003
LL11 124 189 5.9 ± 0.4 green and purple broad, flat 3.88 < 0.003 1.69 0.03
LL13 68 196 3.3 ± 0.3 purple short, broad 2.51 1.26 0.97 < 0.001
LL14 103 210 15.1 ± 1.1 green and purple long, narrow 3.69 < 0.003 1.85 < 0.001
LL15 166 210 2.7 ± 0.9 light green broad, long 2.55 2.87 1.58 < 0.001
LL17 73 231 22.6 ± 1 dark green short, narrow 3.24 0.62 1.87 < 0.001
highest valueKEY lowest value
A GUIDE TO DESCRIPTION AND PRODUCTION POTENTIAL 39
Days to Duration Total Free
1st of Protein Invert Sugars Fiber CyanideVariety Harvest Harvest (Days) Avg. Yield (kg) Pod Colour Pod Description (%w/w) (%w/w) (%w/w) (mg/kg)
LL01 117 196 10 ± 0.7 light green short, narrow 4.5 0.76 2.54 0.15
LL02 68 203 11.8 ± 2.2 light green broad, flat 3.33 1.26 1.53 0.05
LL03 68 203 6.2 ± 1.1 light green short, narrow 4.02 < 0.003 1.21 0.63
LL04 75 203 16.7 ± 1.3 light green broad flat 3.08 < 0.003 1.30 0.23
LL05 68 203 15.6 ± 1.1 light green short, narrow 3.57 0.2 1.72 0.86
LL07 124 189 11.6 ± 0.8 dark green long, narrow 5.12 0.87 2.46 0.02
LL08 68 203 6.5 ± 1.1 light green short, narrow 3.10 1.88 1.16 0.003
LL11 124 189 5.9 ± 0.4 green and purple broad, flat 3.88 < 0.003 1.69 0.03
LL13 68 196 3.3 ± 0.3 purple short, broad 2.51 1.26 0.97 < 0.001
LL14 103 210 15.1 ± 1.1 green and purple long, narrow 3.69 < 0.003 1.85 < 0.001
LL15 166 210 2.7 ± 0.9 light green broad, long 2.55 2.87 1.58 < 0.001
LL17 73 231 22.6 ± 1 dark green short, narrow 3.24 0.62 1.87 < 0.001
40 SEIM - VARIETIES GROWN IN TRINIDAD AND TOBAGO
References
Tindall, H.D. (1987). Vegetables in the Tropics pp 271
Tropical legumes: Resources for the future (1979). Report of an adhoc panel on Tropical legumes. Lablab, pg 59-67 National Academy of Science
Purseglove, J.W. (1987). Tropical Crops - Dicotyledons, pp 273-276
NAMDEVCO (2016). Green Vine Vol14 No. 6 August-Sept 2016
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