STUDY ON GENE ACTION AND FERTILITY RESTORATION IN F1 HYBRIDS INVOLVING CMS LINES AND RESTORER LINES IN PIGEONPEA [Cajanus cajan L. Millsp]

NEETU SONI¹*, P.T. PATEL², K. SURESH³, VIBHA TAK^4
1Department of Genetics and Plant Breeding, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, 385506, Gujarat, India
²Seed Spices Research Station, Sardarkrushinagar, Jagudan, 382710, Gujarat, India
³Department of Crop Physiology, International Crops Research Institute for the Semi-Arid Tropics, ICRISAT, Hyderabad, 502319, Telangana, India
⁴Department of Agricultural Meteorology, Anand Agricultural University, Anand, 388110, Gujarat, India
* Corresponding Author : neetusoni639@gmail.com

Received : 19-01-2017     Accepted : 12-02-2017     Published : 24-02-2017
Volume : 9     Issue : 9       Pages : 3968 - 3971
Int J Agr Sci 9.9 (2017):3968-3971

Keywords : Cytoplasmic male sterile lines, Fertility Restorers, Hybrids, Pigeonpea
Academic Editor : Kaur Harjeevan, Sinha Sweta
Conflict of Interest : None declared
Acknowledgements/Funding : The present work was supported and facilities are provided by the Main Pulses Research Station and Department of Genetics and Plant Breeding, Sardar krushinagar Dantiwada Agricultural University, Sardar krushinagar, Gujarat
Author Contribution : The work is a product of the intellectual environment of the whole team; and that all members have contributed in various degrees to the analytical methods used, to the research concept, and to the experiment design

Line x tester analysis was carried out involving six newly converted cytoplasmic male sterile lines and five fertility restorer lines for gene action and fertility restoration in pigeonpea [Cajanus cajan L. Millsp.]. Synthesized hybrids were evaluated with check Gujarat Tur Hybrid 1, Gujarat Tur 101 and Vaishali at Sardarkrushinagar. Combining ability analysis revealed presence of both additive and non additive gene effects. The values of average degree of dominance were more than unity (>1) and predictability ratio was less than unity (<1) for all the traits except days to flowering, days to maturity, plant height and biological yield, which indicated preponderance of non-additive gene action. The CMS lines, restorer lines, standard checks and hybrids were tested for fertility restoration by observing the pollen fertility status. The male sterile lines (P1) exhibited 100 per cent pollen sterility. The pollen fertility in fertility restorer lines (P2) varied from 98 to 100 per cent. The F1 generation of all the crosses exhibited consummate fertility restoration with pollen fertility varying from 92 to 100 per cent. Thus it is evident that there were striking differences between the male sterile and male fertile lines for pollen fertility and that of resulting hybrids. Thus the success in development of pigeonpea hybrids largely depends on availability of effective pollen fertility restorer lines for evaluating fertile hybrids.