Phenotypic diversity and relationships of fruit quality traits in peach and nectarine [Prunus persica (L.) Batsch] breeding progenies
Phenotypic diversity and relationships of fruit quality traits in peach and nectarine [Prunus persica (L.) Batsch] breeding progenies
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DOI：
10.1007/s10681-009-0023-4
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发表时间：
2010-01-01
期刊：
影响因子：
1.9
通讯作者：
Angeles Moreno, Maria
中科院分区：
文献类型：
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作者：
Cantin, Celia M.;Gogorcena, Yolanda;Angeles Moreno, Maria
对来自15个桃和油桃育种杂交组合的1,111株幼苗在地中海气候下生长的农艺性状和果实品质性状进行了连续三年的评价和比较。不同子代间和子代内的大多数性状存在显著差异。桃或油桃果实、圆形或扁平果实、黄色或白色果肉、离核或粘核等孟德尔性状在育种群体中分离。此外，在我们的后代中发现了败育果和扁平果，我们的数据似乎支持多等位基因控制扁平形状和败育果。开花期、采收期、产量、单果重、可溶性固形物含量等性状在后代中呈连续变异，属多基因遗传。果树品质性状和这些农艺和果实品质参数之间的关系也被发现。有价值的农艺和果实品质参数之间的相关性被发现，虽然变异系数取决于后代应被考虑。此外，主成分分析（PCA）揭示了所评价后代品质性状之间的多种关系。在此基础上，从初始育种群体中预选出26个优异基因型用于进一步研究。
Agronomic and fruit quality traits were evaluated and compared for three consecutive years on 1,111 seedlings coming from 15 peach and nectarine breeding crosses, grown under a Mediterranean climate. Significant differences among and within the different progenies were found for most of the traits analyzed. The breeding population segregated for several Mendelian characters such as peach or nectarine fruit, round or flat fruit, yellow or white flesh and freestone or clingstone. In addition, aborting fruit and flat fruit trees were found in our progeny, and our data seem to support multi-allelic control of both flat shape and aborting fruit. The variation within the progenies of some traits such as blooming and harvesting date, yield, fruit weight and SSC was continuous, suggesting a polygenic inheritance. Relationships between qualitative pomological traits and these agronomic and fruit quality parameters were also found. Valuable correlations among agronomic and fruit quality parameters were found, although coefficients of variation depending on the progeny should be considered. In addition, principal component analysis (PCA) revealed several relationships among quality traits in the evaluated progenies. Based on this evaluation, 26 outstanding genotypes were pre-selected from the initial breeding population for further studies.