论文部分内容阅读
以5种小麦同核异质胞质雄性不育系为材料,观察具花药及小孢子的形成与发育过程,对各个材料进行比较,结果表明: 1.小孢子败育发生在小孢子发育的各个时期,小孢子母细胞时期与单核期为两个败育高峰期。 2.单核期以前出现小孢子母细胞粘连、大型细胞、多核质团及整个花药败育等现象,单核期发生大量败育,以小孢子胞质稀薄式解体为主,兼有部分绒毡层异常;单核期以后存留极少数小孢子,可继续进行有丝或无丝的核分裂,形成2～3核结构或多个游离核,但最终解体。 3.5种同核异质不育系,败育特点有相同和相异。相同或相近细胞质类型的材料败育表现相似。 4.认为细胞质雄性不育材料的败育,是核质互作的结果。
Five wheat isoforms of heteronuclear cytoplasmic male sterile lines were used as materials to observe the formation and development of anthers and microspores. The results showed that: 1. The microspore abortion occurred in the development of microspore During each period, microspore mother cell stage and monokaryosis are two abortion peak. Before the mononuclear stage microspore mother cell adhesion, large cells, multi-nuclear mass and the anther abortion and other phenomena, a large number of abortion occurred in the mononuclear phase, mainly to microspore cytoplasmic thin disintegration, both partial velveteen Felt layer abnormalities; after the mononuclear period kept a handful of microspores, can continue to filamentous or non-filamentous nuclear fission, the formation of 2 to 3 nuclear structure or more free nuclei, but eventually disintegration. 3.5 kinds of nuclear heterogenous sterile lines, abortion characteristics are the same and different. The same or similar cytoplasmic types of materials abortion similar performance. 4 that cytoplasmic male sterile material abortion, is the result of nuclear matter interaction.