摘要
通过幼胚培养和秋水仙碱处理，人工合成了具有一对双随体染色体的硬粒小麦——簇毛麦双二倍体（ＡＡＢＢＶＶ）。根尖细胞染色体数目２ｎ＝４２；花粉母细胞减数分裂中期Ⅰ，２ｎ＝２１″的细胞占６９．９４％，染色体构型为１．０′＋２０．４７″＋０．０２。天然和自交结实率分别为４９．０７％和３９．２３％。籽粒蛋白质含量为２０．９８％。抗白粉、条锈、叶锈和赤霉病。
Amphidiploid (2n=42 AABBVV) with a pair of disatillite chromosomes of T.durum (2n=28 AABB)- H.villosa (2n=14 VV) was synthesized through culture of immature hybrid embryos and colchicine treatment.Root tip chromosome numbers were 42.In the meiosis of PMC at MI,the percentage of cells of 2n=21″ was 69.94% and the chromosome configuration was 1.0′+20.47″+0.02.Natural seed setting and selfing rate were 49.07% and 39.23%,The protein percentage of grain was 20.98%.The amphidiploid is resistant to powdery mildew,stripe rust,leaf rust and scab.
出处
《西北植物学报》
CAS
CSCD
1998年第3期319-324,共6页
Acta Botanica Boreali-Occidentalia Sinica
基金
国家自然科学基金
陕西省自然科学研究计划
关键词
硬粒小麦
簇毛麦
双随体染色体
双二倍体
Triticum durum
Haynaldia villosa
disatillite chromosome
amphidiploid
