Vol. 7 (5) : September-October 2016 issue
Green Farming Vol. 7 (5) : 1058-1061 ; September-October, 2016
Comparative analysis of effectiveness of wide compatibility (WC) trait between improved maintainer line having WC and without WC gene in rice
RAHUL PRIYADARSHIabc1*, HARI PRASAD A.S.b2, AKHILESH KUMAR SINGHc3, ULAGANATHAN K.a4 and VINAY SHENOYc5
aDeptt. of Genetics, Osmania University, Tarnaka, Hyderabad - 500 007 (Telangana)
bICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad - 500 030 (Telangana)
cBarwale Foundation Research Centre, Himayathnagar, Hyderabad - 500 029 (Telangana)
Designation : 1Ph.D. Scholar Presently - IIRR, Hyderabad *(rhl.priyadarshi@gmail.com),
2Principal Scientist (IIRR), 4Professor (CPMB), 3Breeder (Presently - Rasi Seeds Pvt. Ltd., Hyderabad, Telangana),
5Head Biotechnology (Presently Kaveri Seed Co. Ltd., Secunderabad)
Subject : Crop Genetics and Plant Breeding
Paper No. : P-4674
Total Pages : 4
Received : 09 January 2016
Revised accepted : 19 August 2016
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Citation :
RAHUL PRIYADARSHI, HARI PRASAD A.S., AKHILESH KUMAR SINGH, ULAGANATHAN K. and VINAY SHENOY. 2016. Comparative analysis of effectiveness of wide compatibility (WC) trait between improved maintainer line having WC and without WC gene in rice. Green Farming Vol. 7 (5) : 1058-1061 ; September-October, 2016
ABSTRACT
Hybrid rice technology is one of the potential options for increasing rice yield. The present study was carried out to know the effectiveness of wide compatibility trait. The compatibility as measured by percentage spikelet fertility in F1s revealed it to vary between the IR58025WCB having wide compatibility (WC) gene and IR58025B. The F1s were also analyzed for pollen fertility with I2-KI solution. In crossing of IR58025WCB with indica, japonica and tropical japonica testers, group mean spikelet fertility 83.62%, 77.75% and 69.16% respectively; and in comparison to crossing of recurrent parent IR58025B with indica, japonica and tropical japonica testers, group mean spikelet fertility 81.80%, 43.90% and 59.94% respectively. The anticipated increase in group mean percentage overcome with indica, japonica and tropical japonica testers 2.50%, 13.93% and 36.99% for pollen fertility and 2.22%, 77.11% and 15.38% for spikelet fertility respectively. Such kind of approach helps in the combination of genetic background of the two dissimilar sub-species. The effectiveness of wide compatibility trait in improved parental line would be used for exploitation indica and japonica in hybrid rice breeding programme.
Key words :
Hybrid sterility, Inter-subspecific crosses, Maintainer line, Rice, Wide compatibility trait.
