Male Sterility Caused by Cooling Treatment at the Young Microspore Stage in Rice Plants. XXXI. Four components participating in fertilization.

• DOI: 10.1626/jcs.61.454
• Publication Date: 2011-09-22T03:38:31Z
• Authors: Tetsuo SATAKE; Masahiro SHIBATA
• Keywords: Double fertilization

We divided the developmental processes from microspore differentiation to fertilization into 4 phases and defined component relating in each phase. The percentage of was expressed by product components which are number differentiated microspores (X1), developed pollen grains (X2), shed (X3) efficiency (X4). There were greate varietal differences contribution degrees these fertilization. ratio estimated multiple regression analysis, using 19 rice varieties differing cooling tolerance. first 3 (X1, X2 X3) explaind 82% variation among spikelets cooled at critical stage. 4th component, is germination on stigma germinated grains, not this paper. Somewake, Akage, Kitaake, Dohokumochi 18, Chubo 42 Hayayuki expected as donors with high capacity for X1, Hamaasahi, Todorokiwase, Kochiminori X2, Sorachi, 42, Kitaake X3. concept fertilization-components useful tools indentify genetic sources tolerance, analyse physiological mechanisms