sterile plant

The formation and developmental process of pollen and fundamental structure and development of anther wall in sterile plant and fertile plant of PXDGMSR were studied in the thesis.

利用光学显微镜技术对萍乡显性核不育水稻（PXDGMSR）可育株和不育株花粉形成及发育过程、药壁组织的基本结构及其发育进行了研究。

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It has a comparatively compact plant type with thick culm, colorless leaf sheath and glume tip. Its male sterility is complete and stable with 100% of male sterile plants, 99.99% of pollen sterility and 0.025% of bagged selfed seed-setting rate.

不育性稳定，群体不育株率100%，花粉不育度99.99%，套袋自交结实率为0.025%；

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The results showed that the morphology between sterile line and maintainer line were significantly different. The plant height was higher in maintainer line.

结果表明，不育系与保持系植株形态差异较大。不育系的株高比其相应的保持系低。

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The meiosis behavior of pollen mother cell of sterile plant was normal and tetrads were formed. However degradation of tetrad callose wall was abnormal.

不育株花粉母细胞减数分裂过程基本正常，可形成四分体，但四分体胼胝质壁不能适时解体，小孢子或于胼胝质壁内彻底败育解体，或发育至单核中期败育；

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Its critical sterility inducing temperature ( CSIT) was low at about 23.5 ℃. Grown in Hefei, it had a long stable sterile period over 30 days with 100% sterile plant rate, 99.99% pollen sterility rate and no bagged selfed seed set.

2301S不育株率100%，花粉败育率99.99%，套袋自交不实率100%，不育起点温度较低，在合肥不育期30d以上；

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It is suggested that the abnormality of callose wall and short of spro pollenin in the male sterile plant during the genesis and development of the microspore are the main reasons for abortion of microsporangium.

不育株小孢子发生和发育过程中胼胝质的异常和小孢子缺乏孢粉素是引起小孢子囊败育的原因之一。

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The Grafting of Excised Hypocotyl Segment of Plant in Sterile Culture

植物离体茎段嫁接

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