A Study on stigma receptivity of cytoplasmic-nuclear male-sterile lines of Pigeonpea [Cajanus cajan (L.) Millspaugh]

Puttawar, M.R and Kalpande, H.V. and Patil, A.E. and Naware, M.S. (2018) A Study on stigma receptivity of cytoplasmic-nuclear male-sterile lines of Pigeonpea [Cajanus cajan (L.) Millspaugh]. International Journal of Current Microbiology and Applied Sciences (SppI 6). pp. 1319-1324.

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Abstract

Stigma receptivity in pigeonpea was studied using 4 male sterile lines ICPA-2043, ICPA- 2047, ICPA-2092 with A4 cytoplasm and BSMR-736A with A2 cytoplasm under field conditions. An experiment was conducted to observe the stigma receptive period at three selected environments viz., Parbhani (E1), Nanded (E2), and Badnapur (E3).As the starvation period to stigma went on increasing number of pods formation went on decreasing from 0 to 14 hour. The study revealed that stigma receptivity was highest (100%) when pollination were made on the day of flower opening (Day 1) in case of lines ICPA-2043, ICPA-2047 and ICPA-2092 and it was only 93% in case of line BSMR-736A. It was remained in the high regime for another two days. Subsequently the pod set declined with time and there was no pod set after 56 hour starvation. The variation observed in pod setting at different stages could be attributed to the inherent developmental changes in stigma and embryo sac of the female flowers. The high pod set on the day of flower opening suggest that perhaps most of the egg cell developed on that day. The long time span of stigma receptivity in pigeonpea encourages insect-aided natural out-crossing. This information will help breeders to carry out hybridization activity with high success rates. Also the long receptivity may facilitate more seed yield in isolated seed production blocks.

Item Type: Article
Uncontrolled Keywords: Pigeonpea, Cajanus cajan, hybrid vigour, standard heterosis, yield and yield attributes
Author Affiliation: Department of Agricultural Botany. College of agriculture Konghara Ta. Kelapur Dist. Yavatmal, Maharashtra, India
Subjects: Crop Improvement
Divisions: Pigeonpea
Depositing User: Mr T L Gautham
Date Deposited: 12 Mar 2019 04:35
Last Modified: 12 Mar 2019 04:35
URI: http://eprints.icrisat.ac.in/id/eprint/15895

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