4Kumar R, G. Singh. 1988. Investigations into the cause of sterility Tecoma stans L. Bull Soc Bot, 135 : 131 - 136.
5Matsui T, Omasa K, Horie T. 2001. Comparison between anthers of two rice (Oryza sativa L.) cultivars with tolerance to high temperatures at flowering or susceptibility. Plant Prod Sci, (4) : 36 - 40.
6Matsui T, OmasaK, Horie T. 2000. High temperature at flowering inhibits swelling of pollen grains, a driving force for thecae dehiscence in rice (Oryzasativa L.) . Plant Prod Sci, (3) : 430 - 434.
7Matsui T, Omasa K. 2002. Rice (Oryza sativa L.) cultivars tolerant to high temperature at flowering anther characteristics. Annals of Botany, 89: 683- 687.
8Prasad P V V, Boote K J, Allen Jr, Sheehy J E, Thomas J M G. 2005. Species, ecotype and cultivar differences in spikelet fertility and harvest index of rice in response to high temperature stress. Field Crops Research, 95:398 - 411.
9Satake T, Yoshida S. 1978. High temperature induced sterility in indica rices at flowering. Japanese Journal of Crop Science, 1978, 47:6 - 17.