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首页> 外文会议>The Third International Conference Symposium on Longan,Lychee and Other Fruit Trees in Sapindaceae Family(第三届国际龙眼，荔枝及其他无患子科果树学术研讨会） >A Study on the Genetic Effect and MAS Exploration of Juvenile Phase and Fruit Maturation Period in a Mapping Population of Litchi
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A Study on the Genetic Effect and MAS Exploration of Juvenile Phase and Fruit Maturation Period in a Mapping Population of Litchi

机译：荔枝作图种群幼年期和果实成熟期的遗传效应及MAS探索

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摘要

Important traits including juvenile period,fruit maturation period and duration of fruit development were investigated in the F1 mapping population of 'Maguili×Jiaohesanyuehong' in order to understand the separation patterns and genetic variation tendencies of these traits.The results showed that the juvenile period varied from 4.5 to 8.5 years or more,and there were a lot of individuals with short juvenile phase,suggesting that the juvenile of litchi hybrid seedlings was related with the genotypes.The traits of fruit maturation period and duration of fruit development displayed an intermediate inheritance,but the maternal hereditary potency was a little stronger than the paternal,suggesting a matroclinal inheritance tendency.The fruit maturation period showed a continuous variation and the duration of fruit development showed a typical normal distribution,both displayed a quantitative inheritance pattern.Also,the fruit maturation data proved that it is available to predict the ripening stage of the individuals even in their seedling stage by application of the molecular markers (RAPDs and SCARs) closely related with fruit maturation period,which were obtained in our early experiments. The above results showed that there were abundant individuals with short juvenile period and extremely late maturation among the mapping population,providing perfect materials for QTL location and breeding of new cultivars.The mapping population is of important value for theoretical research and breeding.
机译：为了了解这些性状的分离模式和遗传变异趋势，对“马贵利×角色三岳红” F1作图群体进行了幼年期，果实成熟期和果实发育持续时间等重要性状的研究。从4.5到8。5年或以上，幼年期短的个体很多，这表明荔枝杂种的幼年与基因型有关。果实成熟期和果实发育持续时间的性状表现出中等的遗传，但是母体的遗传力要比父本强一些，这说明其具有股母遗传的趋势。果实的成熟期呈现出连续的变化，果实的发育持续时间呈现出典型的正态分布，均表现出定量的遗传模式。成熟度数据证明可以预测我们通过早期实验获得了与果实成熟期密切相关的分子标记（RAPDs和SCARs），从而使个体甚至在幼苗期都达到了成熟期。以上结果表明，作图群体中有很多幼年期短，成熟期极晚的个体，为QTL定位和新品种育种提供了理想的材料。作图群体对理论研究和育种具有重要价值。

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