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:
enriching the phenotypic database related to the 50 commercial and popular varieties of mung bean
determining the crop yield of these genotypes by irrigating at the critical crop growth stage, and
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.
For us gems means GEMS, or G*E*M*S (genotype by environment by management by society) interactions, i.e. the fact that crop yields results from complex biophysical interactions while acceptance depends on farmer/consumer preferences. This complexity becomes an opportunity when it is cracked into components that can be analysed, understood, predicted, and then used to prioritise research investments to maximise return. This is what we do, and this is when GEMS become gems!
For us gems means GEMS, or G*E*M*S (genotype by environment by management by society) interactions, i.e. the fact that crop yields results from complex biophysical interactions while acceptance depends on farmer/consumer preferences. This complexity becomes an opportunity when it is cracked into components that can be analyzed, understood, predicted, and then used to prioritize research investments to maximise return. This is what we do, and this is when GEMS become gems!
A crop performs in different ways in different sites, years and agronomic managements. These are called genotype-by-environment-by management(G*E*M) interactions, and they are a main challenge for breeders and agronomists. There is one more layer of interaction, even more complex: the society (S). Farmers and consumers have different desires, needs, expectations, and a cultivar that fits one may not fit the other (G*E*M*S interactions). The puzzle is complex and challenging but if its components are understood, specific interventions can be undertaken.For instance, breeding for a particular genotype (G, with particular physiological characteristics), for a particular environment (E, with a particular kind of drought pattern that requires a specific adaptive trait), in a particular management practice (M, for instance a sowing density, or a N fertilizer treatment), and targeted to particular farmer/consumer (S, for instance a genotype that produces a lot of rich stover for cattle ranchers) is the need of the hour.