Potato breeding with haploids and 2n gametes
Potato breeding with haploids and 2n gametes
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DOI：
10.1139/g89-174
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发表时间：
1989-01
期刊：
影响因子：
3.1
通讯作者：
S. Peloquin;G. Yerk;J. E. Werner;E. Darmo
中科院分区：
文献类型：
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作者：
S. Peloquin;G. Yerk;J. E. Werner;E. Darmo
马铃薯育种方法利用马铃薯组Solanum tuberosum或组Andigena的单倍体和2n配子，利用遗传多样性，包括有价值的性状和等位基因多样性，可在外来种质。涉及三个基本组成部分：（i）栽培4x马铃薯的野生和栽培2x亲属是遗传多样性的宝贵来源;（ii）单倍体（2n = 2x = 24）品种（2n = 4x = 48）在捕获多样性方面是有效的（种质增强）;（iii）由第一次分裂恢复产生的2n配子是将这种遗传多样性传递到栽培的4x马铃薯的有效方法。总块茎产量和商品块茎产量及比重的杂种优势发生在4x品种与2x单倍体的黑芥×黑芥杂交的4x家系中。从相对较小的4x × 2x家系中选出的4x无性系已根据其在热带的早熟性和耐热性作为栽培品种释放。4 × 2x杂交的其它4 ×无性系，其中，
Potato breeding methods that utilize haploids of Solanum tuberosum group Tuberosum or group Andigena and 2n gametes exploit the genetic diversity, including both valuable traits and allelic diversity, available in exotic germ plasm. Three essential components are involved: (i) the wild and cultivated 2x relatives of the cultivated 4x potato are a valuable source of genetic diversity; (ii) haploids (2n = 2x = 24) of cultivars (2n = 4x = 48) are effective in capturing diversity (germ plasm enhancement); (iii) 2n gametes, resulting from first division restitution, are an efficient method of transmitting this genetic diversity to cultivated 4x potatoes. Heterosis for total and marketable tuber yield and specific gravity occurs in 4x families from crosses between 4x cultivars and 2x haploid Tuberosum × 'Phureja' hybrids. Selected 4x clones from relatively small 4x × 2x families have been released as cultivars based on their earliness and heat tolerance in the tropics. Other 4x clones from 4x × 2x crosses, wher...