Genetic inheritance of component traits associated with shoot fly resistance in sorghum [Sorghum bicolor (L.) Moench]

Saikiran, Veldandi and Shivani, D. and Ramesh, S. and Maheswaramma, S. and Sujatha, K. and Sravanthi, K. and Yamini, K. N. and Varaprasad, B. V. and Kumar, C. V. Sameer (2023) Genetic inheritance of component traits associated with shoot fly resistance in sorghum [Sorghum bicolor (L.) Moench]. CEREAL RESEARCH COMMUNICATIONS, 51 (3). pp. 567-575. ISSN 0133-3720 (print), 1788-9170 (online)

Text CRC_51_567-575.pdf - Published Version Restricted to Repository staff only Download (676kB)

Abstract

The purpose of this study was to investigate sorghum hybrids to estimate genetic components of variance, heritability, genetic advance as per cent mean, gene action operating in component traits associated with shoot fly (Atherigona soccata) resistance, and their inheritance in a way to appear in the general and specific combining abilities of parents and crosses. We evaluated 48 sorghum hybrids planted in a randomized block design, including two checks, IS 18551 as resistant and Swarna as susceptible. The findings revealed that non-additive gene action controls the inheritance of shoot fly resistance. Parents, ICSA 433, ICSR 13031 and ICSR 13042, as well as hybrids, viz. ICSA 427 × ICSR 13043 (− 12.603), ICSA 433 × ICSR 13046 (− 10.697) and ICSA 435 × ICSR 13046 (− 9.242), had a high number of favourable alleles for low deadhearts (direct measure of resistance) formation. Almost all of the traits had significant narrow- and broad-sense heritabilities, indicating that shoot fly resistance is highly inherited.

Actions (login required)

Edit Item