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Climatic Responses, Environmental Indices and Interrelationships Between Qualitative and Quantitative Traits in Clusterbean Cyamopsis tetragonoloba (L) Taub. Under Arid Conditions

Climatic Responses, Environmental Indices and Interrelationships Between Qualitative and... Clusterbean, Cyamopsis tetragonoloba (Family Fabaceae), is a drought tolerant summer legume mainly grown in the north-western parts of India. India is the single largest producer and exporter of guar gum accounting for more than 80 % of total global output and trade. Forty genotypes of clusterbean were evaluated for a period of 3 years (2005–2007) under rainfed conditions to study the climatic responses and the association patterns of gum and endosperm content vis-à-vis morphological traits. The climatic parameters had significant impacts on the seed yield and gum content. Seed yield, yield attributing traits and gum content were markedly differed in their responses to the climate variables. Higher temperature (36.1 °C), lower relative humidity (78 %), more duration of sunshine (11 h) have been observed to be responsible for higher seed yield and gum content in the plant. The highest positive correlations were found with seed yield and pods/plant (r = 0.89), seeds/pod (r = 0.53), secondary branches/plant (r = 0.49), plant height (r = 0.48) and primary branches/plant (r = 0.29). Endosperm exhibited significant positive association with gum content. Plant height, number of branches, seeds/pod and pods/plant are the important characters for improvement of seed yield while higher seed weight may result into higher endosperm and indirectly higher gum content. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Proceedings of the National Academy of Sciences, India Section B: Biological Sciences Springer Journals

Climatic Responses, Environmental Indices and Interrelationships Between Qualitative and Quantitative Traits in Clusterbean Cyamopsis tetragonoloba (L) Taub. Under Arid Conditions

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References (24)

Publisher
Springer Journals
Copyright
Copyright © 2013 by The National Academy of Sciences, India
Subject
Life Sciences; Life Sciences, general; Behavioural Sciences; Plant Biochemistry; Nucleic Acid Chemistry
ISSN
0369-8211
eISSN
2250-1746
DOI
10.1007/s40011-013-0269-4
Publisher site
See Article on Publisher Site

Abstract

Clusterbean, Cyamopsis tetragonoloba (Family Fabaceae), is a drought tolerant summer legume mainly grown in the north-western parts of India. India is the single largest producer and exporter of guar gum accounting for more than 80 % of total global output and trade. Forty genotypes of clusterbean were evaluated for a period of 3 years (2005–2007) under rainfed conditions to study the climatic responses and the association patterns of gum and endosperm content vis-à-vis morphological traits. The climatic parameters had significant impacts on the seed yield and gum content. Seed yield, yield attributing traits and gum content were markedly differed in their responses to the climate variables. Higher temperature (36.1 °C), lower relative humidity (78 %), more duration of sunshine (11 h) have been observed to be responsible for higher seed yield and gum content in the plant. The highest positive correlations were found with seed yield and pods/plant (r = 0.89), seeds/pod (r = 0.53), secondary branches/plant (r = 0.49), plant height (r = 0.48) and primary branches/plant (r = 0.29). Endosperm exhibited significant positive association with gum content. Plant height, number of branches, seeds/pod and pods/plant are the important characters for improvement of seed yield while higher seed weight may result into higher endosperm and indirectly higher gum content.

Journal

Proceedings of the National Academy of Sciences, India Section B: Biological Sciences – Springer Journals

Published: Dec 21, 2013

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