Identification of superior exotic lines in rice (Oryza Sativa L) for yield and yield contributing characters
Keywords:
Rice, exotic accessions, yield, quantitative traitsAbstract
The present research was conducted in the department of Plant Breeding and Genetics, College of Agriculture,Kerala Agricultural University during 2019. Eighty-nine exotic rice lines from IRRI Philippines were evaluatedalong with five check varieties (Jyothi, Jaya, Thulasi, Vaishak and Manurathna) in augmented design foryield and yield related traits. Observation on quantitative characters showed that seventeen accessions werehaving low height than the check varieties. Thirty-six accessions were having longer ligule, while, fifteenaccessions were having longer leaf and accession EC 204863 had broader leaves. Thirty-three accessionswere early to flower and 34 accessions were early to mature. Accessions EC 207747, EC 204863, EC205042 and EC 205128 had high number of tillers. Accessions EC 207747, EC 204863, EC 205070 and EC415401 had high number of productive tillers per plant. Accessions EC 204847, EC 205001, EC 205223, EC205314, EC 415448 and EC 415452 had more number of spikelets. While, comparing with check varieties,eighteen accessions had longer panicles. Eight accessions had more grain number and nineteen accessionshad longer grains. Majority of the accessions had grain yield on par with check varieties.References
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