“Characterization of Lentil Genotypes for Yield Component and Terminal Heat Stress Tolerance Traits”
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Date
2022-08-08
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BANDA UNIVERSITY OF AGRICULTURE & TECHNOLOGY,BANDA, UTTAR PRADESH, INDIA
Abstract
Lentil is a cool-season food legume with an excellent source of protein, prebiotic
carbohydrates, minerals, and vitamins. The present investigation was carried out at P.G.
Research farm of College of Agriculture, BUAT, Banda, Uttar Pradesh, India in
augmented block design during Rabi season 2021-22. The experimenting materials
comprised of 123 genotypes of lentil containing exotic as well as indigenous germplasm
lines of lentil including three check varieties viz. KM-1, KM-2 and PANT L-7. The data
were recorded under two environments viz. timely sown (E1) and late sown (E2) for sixteen
morpho-physiological characters for estimation of DUS characterization, analysis of
variance, correlation coefficient, heat susceptibility index, yield stability index and
principal component analysis. The considerable morphological diversity has been found
especially in foliage intensity of green color, leaflet size, plant growth habit, seed size, and
seed testa colour. Analysis of variance showed that wide range of variability under both
environmental conditions. A wide range of estimates in the mean performance of
genotypes was found for all characters under both the environmental conditions. LSS-18-
149, L-112-6 were identified as heat tolerant genotypes on the basis of HSI for economic
yield/plant. An overall appraisal revealed that eight genotypes viz. KLS 1461, KLS1453,
KL-09-01, KL 127, LOCAL, WBL-58, L-112-6 and EC-542186 exhibited highly heat
tolerance on the basis of heat susceptibility index and yield stability index for economic
yield/plant under both the conditions. Correlation coefficient of HSI and YSI among
different traits exhibited significant and positive correlation of economic yield/plant with
effective pods/plant, secondary branches/plant, total pods/plant and biological yield/plant.
Principal component analysis exhibited highest cumulative variability of PC6 which
contributed 65.7% in E1 and 67.4% E2 among all traits. Economic yield/plant was
positively correlated with the no. of effective pods/plant, biological yield/plant, total
chlorophyll content, canopy temperature depression and no. of secondary branches/plant in
both the condition of normal and heat stress.
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Citation
Deepak Kumar. 2022. “Characterization of Lentil Genotypes for Yield Component and Terminal Heat Stress Tolerance Traits” Thesis, M.Sc.