摘要
野生二粒小麦与野生燕麦杂交F_2共61株,其中抽穗前(?)亡和黄化未能抽穗的共21株。分离出野生二粒小麦型、硬粒小麦型、斯卑尔脱小麦型、燕麦型和普通小麦型。野生二粒小麦型结实率11.2～63.5%,PMC染色体数为27～36。硬粒小麦型结实正常,PMC染色体数为2n=14″。斯卑尔脱小麦型结实率2.7～43.4%,PMC染色体数为37～50。燕麦型结实基本正常,PMC染色体数为41～43,出现1～2个单价体。普通小麦型的护颖包裹籽粒较松,不断穗节,容易脱粒,染色体数为39～45,结实率1.2～68.2%。杂种F_2不同类型植株的PMC染色体数为27～50,每株能抽穗扬花的植株都能结实,结实率1.2～92.3%。杂种F_2的小麦型中有一部分植株的芒长在外颖背上,表现出燕麦族的分类特征性状。
The hybrid F_2 between Triticum dicoccoides Crn.and Avena fatua L.separated Triticum dicoc-coides,durum,spelta,oat,and common wheat types.Fruit—bearing rate of Tritieum dieoeeoides typewas 11.2—63.5%,chromosomal number of PMC was 27—36.Fruit—bearing rate of durum wheattype was normal,chromosomal number of PMC was 2n=14″.Fruit—bearing rate of spelta type was2.7—43.4%,chromosomal number of PMC was 37—50.Fruit—bearing of oat type essentially wasnormal,chromosomal number of PMC was 41—43,showed 1—2 diads.Common wheat type possesedsofter shield,lemma and palea loosely wraped seed,it threshed not to break ear axis.fruit—bearing ratewas 1.2—68.2%,chromosomal number of PMC was 39—45.Various typal plants of hybrid F_2 had 27—50 PMC chromosomes.Every plant which can come intoear may bear fruit,fruit—bearing rate was 1.2—92.3%.Awns of a part of hybrid F_2wheat typalplants grew on the lemma back,they possesed characteristics of oat tribe which grew awns on the lemmaback.
出处
《种子》
CSCD
北大核心
1992年第2期3-7,共5页
Seed
