4个籼粳杂种的亲和性分析

Ｂｅｌｌｅｍｏｎｔ，ＣＢ－８０１，３２６４，浙湖１１４与籼，粳稻杂交亲和性比较表明：Ｂｅｌｌｅｍｏｎｔ，ＣＢ－８０１表现出广谱，偏籼型的亲和性，基中Ｂｅｌｌｅｍｏｎｔ亲和性优于ＣＢ－８０１。它们均不携带不育胞质的恢复基因，综合考虑株型，开花散粉习性，其更适宜 于转充和不育系；３２６４，浙湖１１４为窄谱，偏粳型广亲和品种，它闪对粳稻ＢＴ型不育胞质具有恢复能力，可以作为转育广亲和恢复系的基础材料。系谱

Analyses on compatibility of four Indica-Japonica hybrids

Compared with intersubspecific and inrasubspecific compatibility among four tested varieties,it was shown that' Bellemont and CB - 801 possess wide - range and Indica - cline wide Compatibility(WC), don't carry the cytoplasmic male sterile (CMS) restoring gene, and the compatibility of Belemont was superility to that of CB - 801. Combination such charaters, plant type, flowering and anther dehencing, Bellemont and CB - 801 were suitable to breeding WC sterile lines. It was also shown that 3264, Zhehu 114 are narrow - range and Japonica - cline WC varieties,they can act as basic materiles for bnding WC restoring lines because of canied JaPOnica BT - tyPeCMS restoring gene, Analyses on ancestral relationship of four tested varieties showed they all derived from the progenies of Indica-Japonica hybrids. So screening Indica -Japonica hybrids, WC lines were easey to find out.