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DST-SERB (N-PDF): Adaptability of mungbean [Vigna radiata (L.) R. Wilczek] varieties for drought environments (2018-20)

DST-SERB (N-PDF): Adaptability of mungbean [Vigna radiata (L.) R. Wilczek] varieties for drought environments (2018-20)

Mungbean [green gram; Vigna radiata (L.) R. Wilczek] is a nutritive legume crop that fixes 58–109 kg/ha atmospheric nitrogen symbiotically. India is the largest producer (65% of world acreage) and consumer (54% of world production) of mungbean. The crop is cultivated over a wide range of environmental conditions such as on marginal soils with low inputs, saline soils, cereal: legume cultivation systems following rice or wheat, etc.

The yield of a cultivated crop is influenced by genetic composition, environment and management practices (G×E×M). It is certain that multiple heritable traits are associated with yield and that there are many underlying mechanisms and interactions that contribute to the growth and development of a crop. The proposed research work focuses on three major directions:

  1. enriching the phenotypic database related to the 50 commercial and popular varieties of mung bean
  2. determining the crop yield of these genotypes by irrigating at the critical crop growth stage, and
  3. determining the crop productivity of these genotypes by altering or increasing planting density.

The plant materials used in this study are commercial and popular varieties of mung bean, therefore, the proposed preliminary field screening of the genotypes would provide genotype-specific phenotypic information that would be valuable for selecting genotypes and deciphering mechanisms involved in securing yield under both well-water and water stress conditions. The same set of mung bean lines showed significant variation in phenology under heat stress. Therefore, the data derived from the proposed experiments would enrich the knowledge regarding the suitability of these genotypes for different cultivation scenarios.