Trait Specific Genetic Stocks for Clusterbean [Cyamopsis tetragonoloba (L.) Taub.] Improvement

H.R. Mahla; R. Sharma; V.S. Rathore; S.C. Meena; Saurabh Swami

doi:10.56093/aaz.v61i3 & 4.134414

Authors

H.R. Mahla ICAR-Central Arid Zone Research Institute, Jodhpur 342 003, India
R. Sharma ICAR-Central Arid Zone Research Institute, Jodhpur 342 003, India
V.S. Rathore ICAR-Central Arid Zone Research Institute, Regional Research Station, Bikaner 334 004
S.C. Meena ICAR-CAZRI, Regional Research Station, Jaisalmer 345 001, India
Saurabh Swami ICAR-Central Arid Zone Research Institute, Jodhpur 342 003, India

https://doi.org/10.56093/aaz.v61i3%20&%204.134414

Keywords:

Guar, Clusterbean, Trait specific germplasm, Early maturing, Test weight

Abstract

Trait specific germplasm is important for altering plant architecture for
maximization and stability of the yield. The traits like short duration (early flowering
and maturing), branching pattern, pod length, plant height, internode length, peduncle
length and determinacy have contributed substantially in the development of new varieties
in legumes. However, in cluster bean (Cyamopsis tetragonoloba L. Taub.) most of the
varieties embody a similar plant architecture and belong to same maturity group with
comparable yield potential, limiting the scope for further improvement. The economically
important traits like seed weight (test weight ≈3.5 g), pod length (≈6.0 cm), seeds per
pod (≈6) and crop duration (≈95 d) have a very narrow range in seed type varieties of
cluster bean. Realizing the paucity of diversity in traits for further yield improvement
of yield and suitable plant type in guar efforts were made to identify trait specific
genotypes to serve as donors. Genotypes possessing short life cycle, longer pods, high
seed weight and longer seedling have been reported.