Evaluation of Combining Ability and Heterosis of Popular Restorer and Male Sterile Lines for the Development of Superior Rice Hybrids
Abul Kalam Azad,
Umakanta Sarker,
Sezai Ercisli,
Amine Assouguem,
Riaz Ullah,
Rafa Almeer,
Amany A. Sayed,
Ilaria Peluso
Affiliations
Abul Kalam Azad
Department of Genetics and Plant Breeding, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
Umakanta Sarker
Department of Genetics and Plant Breeding, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
Sezai Ercisli
Department of Horticulture, Agricultural Faculty, Ataturk University, TR-25240 Erzurum, Turkey
Amine Assouguem
Laboratory of Functional Ecology and Environment, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, Imouzzer Street, Fez P.O. Box 2202, Morocco
Riaz Ullah
Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
Rafa Almeer
Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
Amany A. Sayed
Zoology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
Ilaria Peluso
Research Centre for Food and Nutrition, Council for Agricultural Research and Economics (CREA-AN), 00178 Roma, Italy
Twenty-four hybrids, obtained from a mating design following 6 line × 4 testers, were evaluated to estimate the heterosis, specific, and general combining ability (SCA and GCA) of parents and hybrids to find out suitable general combiner (GC) parents and cross combinations for utilization in the future breeding program. A randomized complete block design with three replications was followed to set the experiment. Data were recorded on grain yield and 13 yield-related agronomic traits. The analysis of variance of all cross combinations had highly significant differences for most of the characters studied, which indicated a wide variation across the genotypes, parents, lines, testers, and crosses. SCA and GCA variances were significant for all studied traits except for the panicle length, indicating that both non-additive and additive gene actions were involved in these traits. The GCA variance/SCA variance for all the traits was 1s, 1 F1, and 3 F1s, respectively. Heterosis and combining ability study revealed that hybrids IR58025A × IR46R and GAN46A × IR46R might be considered preferable hybrid cultivars.
