Vol. 2 (5) : September-October 2011 issue
Green Farming Vol. 2 (5) : 510-512 (September-October, 2011) (New Series)
Study of inheritance of fertility restoration in pigeonpea lines derived from Cajanus cajanifolious
S.L. SAWARGAONKARa1*, I.A. MADRAPb2 and K.B. SAXENAa3
aInternational Crops Research Institute for the Semi-Arid Tropics, Patancheru, Hyderabad - 502 324 (Andhra Pradesh)
bMarathwada Agricultural University, Parbhani - 431 402 (Maharashtra)
Designation : 1Visiting Scientist (Gen. & Pl. Breeding) *(sawargaonkar_sl@rediffmail.com), 2Head (Genetic & Pl. Breeding), 3Principal Scientist (Breeding)
Subject : Crop Genetics and Plant Breeding
Paper No. :
Total Pages : 3
Received :
Revised accepted :
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Citation :
S.L. SAWARGAONKAR, I.A. MADRAP and K.B. SAXENA. 2011. Study of inheritance of fertility restoration in pigeonpea lines derived from Cajanus cajanifolious. Green Farming Vol. 2 (5) : 510-512 (September-October, 2011) (New Series)
ABSTRACT
Information of genetics of fertility restoration is important for breeding new restorer lines. In the present study, single crosses involving four CMS-lines and three known fertility restorers were studied to determine the genetics of fertility restoration. The F1 plants of all the four hybrids were selfed to produce F2 seed and simultaneously crossed to their corresponding A-lines to produce BC1F1 seeds during 2007. The parents, F1, F2, and BC1F1 populations were planted in 2008 rainy season at the Marathwada Krishi Vidyapeeth, Parbhani, India. It was observed that the restorer ICP 2766 when crossed with ICPA 2092 showed monogenic inheritance (3:1), while it's cross with ICPA 2043 revealed digenic inheritance (15:1) of fertility restoration. The interaction of dominant nuclear genes of ICP 2766 with ICPA 2092 produced 100% fertile F1 plant and showed complete dominance for fertility restoration. In a cross between ICP 2766 and ICPA 2043, the dominant gene of fertility restoration at either of two loci masked the expression of male-sterile recessive alleles at the two loci. These nuclear and cytoplasm gene interactions produced male-fertile and male-sterile progenies in F2 generation in such a way that it modified normal di-hybrid ratio in to 15:1 ratio and produced duplicate gene interaction.
Key words :
Cajanus cajanifolious, genetics, inheritance, male-sterility, male-fertility, pigeonpea.
