Conservation of the genetic variation of Triticum tauschii (Coss) Schmalh (Aegilops squarrosa auct non L) in synthetic hexaploid wheats (T-turgidum L s lat x T-tauschii; 2n=6x=42, AABBDD) and its potential utilization for wheat improvement
Conservation of the genetic variation of Triticum tauschii (Coss) Schmalh (Aegilops squarrosa auct non L) in synthetic hexaploid wheats (T-turgidum L s lat x T-tauschii; 2n=6x=42, AABBDD) and its potential utilization for wheat improvement
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DOI：
10.1007/bf00126756
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发表时间：
1996-04-01
影响因子：
2
通讯作者：
Roldan, S
中科院分区：
文献类型：
--
作者：
MujeebKazi, A;Rosas, V;Roldan, S
节节麦Triticum tauschii（Coss.）嘘（Aegilops squarrosa auct.）非L.，2n = 2x = 14，DD基因组）及其多样的种质资源和分布提供了一个独特的机会，利用新的遗传变异小麦（T。aestivum L.）与生物/非生物胁迫因素相关的改善。从我们的工作收集的490吨。迄今为止，我们已经产生了430个不同的人工六倍体（2n = 6x = 42，AABBDD），这些六倍体是由小麦染色体加倍产生的。S. lat. x T. tauschii F-1杂种（每种合成物涉及不同的T. tauschii加入）。我们在这里介绍了我们的研究结果，杂种生产，植株再生，细胞学，秋水仙素诱导的2n = 3x = 21染色体的F1杂种加倍，加倍后代的种子增加和生物胁迫筛选;大豆长蠕孢菌King和Bakke）; 250个这些合成的六倍体（2n = 6x = 42）双倍体。应用感病T. aestivum品种中抗T.还间接提到了桃木的加入。
Triticum tauschii (Coss.) Schmalh. (Aegilops squarrosa auct. non L., 2n = 2x = 14, DD genome) with its diverse range of accessions and distribution provides a unique opportunity for exploiting novel genetic variability for wheat (T. aestivum L.) improvement associated with biotic/abiotic stress factors. From our working collection of 490 T. tauschii accessions we have so far produced 430 different synthetic hexaploids (2n = 6x = 42, AABBDD) resulting from the chromosome doubling of Triticum turgidum L. s. lat. x T. tauschii F-1 hybrids (each synthetic involving a different T. tauschii accession). We present here our results on hybrid production, plantlet regeneration, cytology, colchicine induced doubling of the 2n = 3x = 21 chromosome F1 hybrids, seed increase of the doubled progeny and screening for a biotic stress; Cochliobolus sativus Ito and Kuribay (syn. Helminthosporium sativum Pamm. King and Bakke); of 250 of these synthetic hexaploid (2n = 6x = 42) amphiploids. Application of the direct crossing methodology involving susceptible T. aestivum cultivars with resistant T. tauschii accessions is also alluded to.