Study of grain yield and its components in basmati derived lines of rice (Oryza sativa L.)
Aruna Shrivastava, V. Koche* and R.K. Sahu**
Department of Botany, Govt D.B. Girls P.G. College Raipur (India) *Reader, SOS, Life sciences Pt.Ravishankar Shukla University Raipur (India) **Rtd. Principal Scientist/Professor, Plant breeding and Genetics IGKVV Raipur (India) email: aruna.shrivastava@redffmail.com
ABSTRACT
Grain Yield and its components was studied in 42 genotypic lines in f6 generation derived from crossing Pusa Basmati-1, Basmati- 370 and Jeera phool with elite non Basmati types of Chattisgarh region. They along with four check varieties viz Indira-9, Pusa Basmati-1, Taroari Basmati and Dubraj , were grown in randomize complete block design with two replications . Observations were made on Plant height, Panicle length, Effective tiller number, Hundred seed weight, Biological yield, Harvest index and Grain yield. GCV, heritability and genetic advance were high for effective tiller number, biological yield, harvest index and grain yield. Effective tiller numbers, biological yield and harvest index were positively correlated with grain yield. Path analysis , however, revealed that only biological yield and harvest index had positive direct effect on grain yield . Multiple regression analysis showed that harvest index followed by biological yield account for 97.6% variability in grain yield .