Luo, R.H. and Dalvi, V.A. and Li, Y.R. and Saxena, K.B. (2009) A study on stigma receptivity of cytoplasmic-nuclear male-sterile lines of pigeonpea, Cajanus cajan (L.) Millsp. Journal of Plant Breeding and Crop Science , 1 (6). pp. 254-257.
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Abstract
Stigma receptivity in pigeonpea [Cajanus cajan (L.) Millsp.] was studied using 2 male-sterile lines (ICPA 2039 and ICPA 2043) under field conditions. An experiment was conducted to observe the stigma receptive period at Nanning (22°N 108°E) in Southern China. The study revealed that the stigma was receptive 48 h before flower opening and continued up 4 days after flower opening. The peak stigma receptivity was on the day of flower opening with 84 and 86% pod set after hand pollination in the malesterile lines ICPA 2039 and ICPA 2043, respectively. This floral stage is characterized by the corolla to calyx length ratio of 2.75 ± 0.075 (ICPA 2039) and 2.60 ± 0.283 (ICPA 2043). 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 |
|---|---|
| Author Affiliation: | International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, A.P. India |
| Subjects: | Crop Improvement > Plant Breeding |
| Divisions: | Pigeonpea |
| Depositing User: | David T |
| Date Deposited: | 18 Nov 2010 21:38 |
| Last Modified: | 29 Dec 2010 20:25 |
| Official URL: | http://www.academicjournals.org/jpbcs/PDF/pdf2009/... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/684 |
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