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高粱7个不同胞质核质互作雄性不育系统间育性反应各不相同,其败育程度A1最为彻底,其余依次为A5,A6,A2,9E,A4。A3胞质不育性表现最强,其次为9E,A4,不育程度按照A1→A6→A5→A2→A4→9E→A3的顺序逐步增高,育性恢复也按同样顺序愈来愈困难。研究认为,除目前利用的A1,A2细胞质雄性不育系外,A5,A6,A33个胞质可用于高粱育种和生产。中国高粱恢复系(A2恢复系)对A5,A6仍有较强的恢复力,可直接用于A5,A6系统杂交种选育,印度种质可用于A5不育系、保持系选育,中国高粱资源可用于A3不育系、保持系选育。A1,A2,A5,A6,A3胞质的利用,可最大限度地解除核质互作限制,极大地丰富杂交种选配范围及其遗传基础。
Sorghum 7 different cytoplasmic male sterility cytoplasmic male sterile system of different fertility, abortion A1 the most complete, followed by the A5, A6, A2, 9E, A4. A3 showed the strongest cytoplasmic male sterility, followed by 9E, A4. The degree of sterility increased gradually according to the order of A1 → A6 → A5 → A2 → A4 → 9E → A3. Fertility restoration was more and more difficult in the same order. According to the research, A5, A6 and A33 cytoplasm can be used for breeding and production of sorghum except for A1 and A2 cytoplasmic male sterility lines currently used. Chinese sorghum restorer lines (A2 restorer lines) still have strong restoring ability to A5 and A6, which can be directly used for breeding of A5 and A6 hybrids. Indian germplasm can be used for A5 sterile lines and maintainer line breeding. China Sorghum resources can be used for A3 sterile lines, maintaining lines breeding. Utilization of A1, A2, A5, A6 and A3 cytoplasm can minimize the restriction of nuclear-cytoplasmic interaction and greatly enrich the range of hybrids and their genetic basis.