单芒山羊草与粘果山羊草胞质雄性不育系细胞质效应比较

利用单芒山羊草细胞质雄性不育系（Ｕ型不育系）Ｕ４０１、Ｕ４０２、Ｕ８５６７、Ｕ５１３，粘果山羊草细胞质雄性不育系Ｋ４０１、Ｋ４０２、Ｋ８５６７、Ｋ５１３及其同型保持系Ａ４０１、Ａ４０２、Ａ８５６７、Ａ５１３分别与１０个普通小麦品种杂交，对其Ｆ１及其亲本，不育系，保持系主要农艺性状、恢保养系及单倍体发生频率研究表明（１）相比于Ａ型与Ｋ型细胞质，Ｕ型细胞在农艺性状上无显著不良效应；（２）Ｕ型细胞质杂交

The Comparative Study of the Cytoplasm Effect Between Ae. Uniaristata and Ae.Kotschyi CMS Line

Ae.Uniaristata cytoplasm wheat male sterile (CMS) lines U401,U402,U8567,U513,Ae.Kotschyi CMS lines K401,K402,K8567,K513 and their maintainer lines A401,A402,A8567,A513,were crossed with 10 common wheat lines respectively.The agronomy characters,fertility restoration and maintaining relationship,as well as haploid frequency of the F₁ hybrids and their parents were investigated.The results indicated:Compared with A-type and K-type cytoplasm,U-type cytoplasm had no significant negative effect on agronomicy characters.U-type cytoplasm hybrid had higher germination rate than that of K-type cytoplasm.U-type cytoplasm probably had stronger resistante to powdery mildew than the K-type cytoplasm.The relationship of restora-tion and maintaining to that of Ae.Uniaristat a CMS line almost was identical to that of (K-type) Ae.Kot schyi CMS line,but some difference still existed between the two types of CMS lines.The fertility restoration of U-type CMS line was more difficult and easily affected by the factors of climate.U-type cytoplasm caused higher haploid frequency than K-type.the interaction between nuclei and cytoplasm was significant.