滇榆1号A中散粉株的出现及对策研究初报  

The Relationship Between MS Normal Pollen Plant of Dianyu 1A and it's Maintainer in Yuza 29 and the Controlling Policy

作　　者：张树华[1] 黄大军[1] 金寿林[1] 顾晓明[1] 杨丽娟[1] 李伟华[1] 

机构地区：[1]云南农业大学稻作研究所,650201

出　　处：《杂交水稻》1998年第S2期8-10,共3页Hybrid Rice

基　　金：云南省"八五"科技攻关"滇型杂交水稻研究与应用"课题

摘　　要：经镜检、单株成对回交、混系繁殖到４代，滇输１号Ａ中出现０．３７５％的散粉株，散粉株染色正常和 不正常的花粉粒几乎各占５０％，且自交结实正常，形态特征和不育系、保持系极其相似。用散粉株和不育系测 交，Ｆ代结实正常。散粉株、Ａ／散粉株、保持系单株产量差异不显著，但它们和榆杂２９的单株产量存在极显著差 异。采用单株镜检、成对回交、混系繁殖辅以在开花期和收获期去除散粉株的方法，可以使滇榆１号Ａ的纯度基 本得到保证。F of Dianyu 1A from the mixing pedigrees reproduction after pollen inspecting under microscope and plant to plant pairing, there is still 0.375% MS normal pollen plant (NPP) among A line. Nearly half of them are normal stained pollen in the NPP. The form resemble one another among NPP, A and B. F of A/NPP show normal seed setting. The yield variation among the NPP, A/NPP and B is not dominant, but significantly lower than the yield of hybrid rice Yuza 29. The purity of Dianyu 1A can be ensured generally by inspecting single plant pollen, pairing backcross, mixing pedigrees reproduction along with eradicating the MS normal pollen plants during the period of blooming and harvesting.

关 键 词：滇榆1号A 散粉株 纯度 

分 类 号：S511[农业科学—作物学]