Abstract
Genotype by environment (GE) interactions and genotype stability of a trait in rice (Oryza sativa L) are very important information for plant breeders in making decisions regarding the development and evaluation of new cultivars as well as for farmers in selecting suitable cultivars to be planted for commercial purpose. Four locally adapted cultivars and one high yielding cultivar of rice were evaluated at three environments in Riau, Indonesia. Traits measured included panicles plant-1, number of grains panicle-1, filled grain percentage, seed weight and grain yield. A regression coefficient and deviation from regression as proposed by Eberhart and Russel (1966) were used to determine stability of a genotype. There were significant effects of environments on yield and some yield components, except panicle number plant-1. The cultivars differed significantly in all yield components and grain yield. Cisokan and IR64 had b value did not significantly (P < 0.05) different from 1.0 and had s(d) approaching to zero and were considered as stable for all environments. Kwatik Putih was considered as unstable genotype and specifically adapted to less favorable environment.
| Original language | English |
|---|---|
| Pages (from-to) | 102-111 |
| Number of pages | 10 |
| Journal | Sabrao Journal of Breeding and Genetics |
| Volume | 44 |
| Issue number | 1 |
| State | Published - 2012 |
Keywords
- Genotype x environment interaction
- Rice cultivars
- Stability
- Yield components
ASJC Scopus subject areas
- Biotechnology
- Animal Science and Zoology
- Genetics
- Agronomy and Crop Science
- Horticulture