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Soharu, Alka
- Studies on Induced Chlorophyll Mutants in Black Gram (Vigna mungo L. Hepper)
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1 Department of Genetics and Plant Breeding, CSK Himachal Pradesh Krishi Vishvavidyalaya, 176 062, IN
1 Department of Genetics and Plant Breeding, CSK Himachal Pradesh Krishi Vishvavidyalaya, 176 062, IN
Source
Himachal Journal of Agricultural Research, Vol 47, No 2 (2021), Pagination: 156-162Abstract
The investigation was undertaken to score and identify the chlorophyll mutants in M generation of two 2 genotypes of black gram viz., HM-1 and PLP-93 during Kharif 2019. M generation was raised in Kharif 2018 1 from the seeds of both the genotypes treated with gamma-rays (100, 200, 300 and 400 Gy), EMS (0.1, 0.2, 0.3 and 0.44%) and their possible combinations. Five types of chlorophyll mutants were detected. Most frequent chlorophyll mutant was chlorina (31) followed by albino (15), xantha (12), variegated (7) and striata (6). The frequency of mutants showed gradual increase with increase in dose/concentration of mutagens in both gamma rays and EMS, while the combination treatments showed an irregular trend with increasing dose in both the genotypes of black gram. Combined treatments produced more mutant frequency than gamma-irradiation and EMS treatments for both genotypes of black gram. Genotype HM-1 was observed more responsive to mutation changes than the genotype PLP-93.Keywords
Chlorophyll Mutants, EMS, Gamma-Rays, Mutant Frequency, Black Gram.Full Text
References
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- Morphological characterization and evaluation of Himalayan landraces of blackgram (Vigna mungo (L.) from North-Western plain zone for yield and its component traits
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Authors
Affiliations
1 Department of Genetics and Plant Breeding, College of Agriculture,CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062,, IN
1 Department of Genetics and Plant Breeding, College of Agriculture,CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062,, IN
Source
Himachal Journal of Agricultural Research, Vol 48, No 2 (2022), Pagination: 157-165Abstract
Blackgram is not only a rich source of protein, vitamins and minerals especially in the vegetarian diet but is also utilized as fodder. In any breeding and varietal development programme variability is the prime requirement to acquire favorable gene combinations in segregating generations. Keeping this in view, 23 black gram landraces were evaluated during kharif 2021 at two distinct locations viz., KVK Berthin (Location-1) and Palampur (Location-2) using Randomized Block Design (RBD) in two replications to determine the extent of morphological variation among landraces by using 18 DUS parameters as well as genetic variability. The data was recorded for 11 polygenic characters viz., days to 50% flowering, days to 75% maturity, plant height, branches per plant, biological yield per plant, harvest index, seeds per pod, pods per plant, pod length, 100-seed weight and yield per plant. On the basis of DUS characterization, these genotypes were classified into distinct groups for nine trait and may be used as reference genotypes and grouping in hybridization programs for the production of improved varieties. The analysis of variance revealed significant variations for all yield and its component traits evaluated in each environment as well as the pooled environment. In the current investigation, values of PCV were observed to be higher than GCV for all of the traits under consideration, albeit with a very minor difference, demonstrating that GCV and PCV have a tight correlation and less influence of environment on the traits under investigation. As a conclusion, attributes with a great degree of variability; a meaningful selection based on phenotype would not be misleading. High heritability was found to be associated with higher genetic advance for biological yield per plant and harvest index, demonstrating the dominance of additive gene action, thus, referring advantages selection of these traits.Keywords
Blackgram, Genetic variability, GCV, PCV, Heritability, Genetic advance.Full Text
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