Studies on Promising Restorer Lines for Yield and Yield Components in Rice  (Oryza sativa L.)


Dungu Vasudeva Reddy¹ , Suneetha Y² , Ravi Kumar BNVSR ³, Ramesh D4 , Manoj Kumar D¹ and Srinivas T²*

1* Department of Genetics and Plant Breeding, Agricultural College, Acharya N G. Ranga Agricultural University (ANGRAU), Bapatla,    Andhra Pradesh, India
2 Regional Agricultural Research Station, ANGRAU, Maruteru, Andhra Pradesh, India
3 Regional Agricultural Research Station, ANGRAU, Nandyal, Andhra Pradesh, India
4 Department of Statistics and Computer Applications, Agricultural College, ANGRAU, Bapatla
*Corresponding author Email:

Volume 16-(2), 2023   ;   Click here for Pdf

Received: 7th September, 2023; Accepted: 30th September, 2023


The present investigation was carried out at Regional Agricultural Research Station, Maruteru with a set of 30 experimental hybrids developed by crossing three male sterile lines with 10 testers in Line × Tester mating design during kharif, 2022. The resultant 30 hybrids were evaluated in Randomized Block Design with two replications along with the parents and hybrid check, HRI-174 during rabi, 2022-23. Analysis of variance for yield and yield components revealed significant differences among the genotypes, parents, hybrids and parents vs. crosses for most traits, indicating significant differences among parents and hybrids, in addition to significant levels of heterosis for the traits studied. In general, the hybrids had recorded higher grain yield per plant, compared to the lines and were observed to be early and relatively tall with a more number of productive tillers per plant and increased panicle length compared to the parents. The hybrids, APMS 15A×RGL 5613, APMS 15A×MTU 1213, APMS 17A×RGL 5613 and APMS 17A ×MTU 2055had recorded significant and positive relative heterosis, heterobeltiosis and standard heterosis of more than 25 per cent for grain yield per plant and were identified as promising heterotic combinations for further evaluation and commercial exploitation. th