Development of Novel Blackgram (Vigna mungo (L.) Hepper) Mutants and Deciphering Genotype × Environment Interaction for Yield-Related Traits of Mutants

Autor:	Seshadri Geetha, Datchinamoorthy Sassikumar, Narayanapillai Meenakshiganesan, Manickam Dhasarathan, Adhimoolam Karthikeyan
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	0106 biological sciences Biplot Mutant blackgram 01 natural sciences Vigna 03 medical and health sciences Genotype Cultivar pulses Gene–environment interaction G × E interaction 030304 developmental biology 0303 health sciences AMMI Mutation breeding biology food and beverages Agriculture Ammi mutation breeding biology.organism_classification Horticulture Agronomy and Crop Science 010606 plant biology & botany
Zdroj:	Agronomy Volume 11 Issue 7 Agronomy, Vol 11, Iss 1287, p 1287 (2021)
ISSN:	2073-4395
DOI:	10.3390/agronomy11071287
Popis:	Blackgram (Vigna mungo (L.) Hepper) yields are noticeably poor due to a shortage of improved varieties and an aggravated narrow genetic base. An attempt was made to isolate novel blackgram mutants by selecting for yield-related traits derived through gamma irradiation and testing the mutant genotype’s stability across the different environments. The irradiated blackgram populations M1-M5 were established in the background of cultivars ADT 3, Co 6, and TU 17-9. Desirable mutants were selected from M3 to M5 generations. It was observed in M2 and M3 that gamma rays showed higher mutagenic efficacy and generated good inherited variance for the yield-related traits. M4 established three divergent groups in each blackgram cultivar revealed by clustering analysis. The number of pods per plant, number of clusters per plant, and number of pods per cluster showed a strong direct association with single plant yield and could be considered as selection traits. G × E interactions were higher than the variation due to genotype for single plant yield. Limited environmental interaction was observed for the genotypes G24, G16, G36, G30, and G17, as revealed by AMMI, and the genotypes G18 and G29, as revealed by GGE. GGE biplot revealed the environment-specific genotypes G13 for E1 (Aduthurai), G7 for E2 (Kattuthottam), and G34 for E3 (Vamban) and also portrayed the highly discriminating (E3) and representative (E2) environments. Selected novel blackgram genotypes from this research are useful genetic stocks for genetic improvement and breeding.
Databáze:	OpenAIRE
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