The present investigation was carried out during kharif-2012, 2013 and 2014 under rain fed condition at the Agricultural Research Station, Kalaburagi located in north eastern dry zone (Zone 2) of Karnataka, to know the stability and path analysis of the twenty genotypes of pigeonpea including check WRP-1. Highly significant differences among genotypes were observed for all the characters except primary branches. Environmental + (Genotype × Environment) interaction was significant for days to maturity, primary branch, pod bearing length, and seed yield per plant. The variance due to pooled deviation was highly significant for all the characters except for primary branches, pod length and number of seeds per pod which reflect the presence of sufficient genetic variability in the material. Out of 20 genotypes studied, RVK-275 (X=38.713, bi=1.7 and S2di = -9.67) and AKT-9913 (X =43.397, bi=2.86 and S2di= -7.42) were found to be a stable for seed yield and test weight, across the environments with good stability under rain fed conditions compared to local check. Path analysis revealed that days to flower initiation (3.942 and 1.123), days to maturity (1.493 and 0.960), primary branches (0.667 and 0.045), pod bearing length (1.153 and 0.394), number of pods per plant (0.661 and 0.463) and 100 seed weight (0.352 and 0.426) had the highest positive direct effect on grain yield both at genotypic and phenotypic level. For maximizing the grain yield per plant emphasis should be given in selection of such characters for further improvement in pigeonpea.
Path coefficient analysis, Pigeonpea, Stability, Genotype × Environment (G × E)
Chandirakala, R. and Subbaraman, N. (2010). Character association and path analysis for yield attributes in full sib progenies in pigeonpea (Cajanus cajan (L.) Millsp.). Electronic J. Plant Breed., 1(4): 824-827.
Dewey, D.R. and Lu, K.N. (1959). A correlation and path coefficient analysis of components of crested wheat grass seed production. Agron. J., 51: 515-518.
Eberhart, S.A. and Russell, W.A. (1966). Stability parame-ters for comparing varieties. Crop Sci., 6: 36–40.
Kuchanur, P.H., Tembhurne, B.V and Patil, A. (2008). Sta-bility analysis for yield and yield contributing traits in early pigeonpea under irrigated conditions. Legume Res., 31(4): 276-279.
Manivel, P., Rangasamy, P. and Samdur, M.Y. (1999). Phenotypic stability of hybrids and their parents for seed yield in pigeonpea [Cajanus cajan (L.) Millsp.]. Crop Res., 15(1): 108-111.
Saxena, K.B and Kumar, R.V. (2010). Insect-aided natural out-crossing in four wild relatives of pigeonpea. Euphytica, 173(3): 329-335.
Thanki, H.P. Sawargaonkar, S.L. and Hudge, B.V. (2010). Genotype x environment interaction for biometrical traits in pigeonpea ( Cajanus cajan L. Millsp.) under varying spacing. Electronic J. Plant Breed, 1(4): 925-928.
Vander and Messen, L.J.G. (1980). India is the native home of the pigeonpea. In: Arends, J. C, Boelma, G, de Grant, C.T, Leeuwaenberg, A.J.M. (Eds) Libergratularious in Honrem, H.C.D. de Wit. Agril. Univ., Miscellan. Paper, 19:257-262.
Varshney, R.K., Wenbin, C., Yupeng, L., Arvind, K.B., Ra-chit, K.S., Jessica, A.S.,Mark, T.A., Sarwar, A., Guan-gyi, F., Adam, M.W., Andrew, D.F., Jaime, S.,Aiko, I., Reetu, T., Varma, P., Wei, W., Hari, D. U., Shiaw-Pyng, Y., Trushar, S., Saxena, K.B., Todd, M., Richard, McCombie, Bicheng, Y., Gengyun, Z., Huanming, Y., Jun, W., Charles, S., Douglas, R.C., Gregory, D.M., Xun, X. and Scott, A.J. (2012). Draft genome sequence of pigeonpea (Cajanus cajan), an orphan legume crop of resource-poor farmers. Nature Biotech., 30: 83-89.
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