Performance of Greengram Genotypes for Morpho-physiological and yield Traits

Author: Laxmi Swetha B., N. Jyothi Lakshmi, Ch. Aruna Kumari, Salini K. and T. Ramesh

Download PDF

Abstract

A field experiment with five genotypes of green gram (Vigna radiata (L.) R. Wilczek) was conducted during rabi 2021 for understanding their variation in morphological, phenological, physiological, biomass and yield parameters prior to moisture stress experiments. Plant height was highest in genotype MGG-351(52 cm) followed by MGG-385 (48cm). Days to 50% flowering (40 days) and days to maturity (73 days) were highest in genotype MGG-385 compared with other genotypes. Genotypes WGG-42 and MGG-385 recorded higher photosynthetic rate of 27.25 and 27.03 µmol CO2 m-2s-1. The water-holding capacity of excised leaves among the genotypes ranged between 71.1% to 73.0%. A significant genotypic variation was observed for total biomass, seed yield, pod number, pod weight, clusters/plant, pods/cluster, pods/plant, seeds/pod and hundred seed weight. Genotypes MGG-385 (11.90 g/pl) and MGG-351(11.8 g/pl) produced significantly higher seed yield than WGG-37(10.6 g/pl), WGG-42 (10.4 g/pl) and MGG-295 (9.7 g/pl).

Keywords

Greengram, chlorophyll, photosynthesis, ELWRC, yield

Conclusion

It can be concluded that morpho-physiological and yield traits like higher total chlorophyll content, photosynthetic rate, water use efficiency, pod weight, harvest index and more days to maturity (73 days) to be major contributing factors for higher yield performance in genotype MGG-385. Genotype MGG-295 had higher vegetative biomass and lower harvest index. Genotype WGG-42 with less crop duration of 63.5 days has highest number of seeds per pod, hundred seed weight, harvest index and ELWRC. Increased yields in the recently released varieties (MGG-385, WGG-42) is largely attributable to improved partitioning of biomass to grain i.e. higher harvest index and physiological superiority.

References

-

How to cite this article

Laxmi Swetha B., N. Jyothi Lakshmi, Ch. Aruna Kumari, Salini K. and T. Ramesh (2022). Performance of Greengram Genotypes for Morpho-physiological and yield Traits. Biological Forum – An International Journal, 14(4): 1259-1262.