A review on pear bud sport breeding and research progress in mutant mechanisms
A review on pear bud sport breeding and research progress in mutant mechanisms
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作者：
S. Zebin
通过对梨花蕾运动品种和品系的资料收集和分析，将其自然变异特性分为5类16个小类。这些特性主要集中在大果型、果皮颜色、成熟期、贮藏性和自交亲和性等方面。综述了花蕾运动品种/品系及其相关变异特性的研究进展。大果变异的原因可分为染色体加倍和果重控制基因突变两类，果皮颜色变异主要是花青素、叶绿素或软木生物合成途径中的遗传突变引起的，果皮颜色变异主要由花青素、叶绿素或木塞生物合成途径中的遗传突变引起。S基因座的突变导致了自交亲和性的自发变异，讨论了梨花蕾运动育种对不同品质改良的效果，并展望了梨花蕾运动育种相关的研究和技术发展。
Through information collection and analyzing of the pear bud sport varieties and strains,the spontaneous variation characters were divided into 5 types and 16 small classes.These characters are mainly concentrated on large-fruit type,peel color,mature date,storage property,and self-compatibility,etc.The research progress in the bud sport varieties/strains and related variation characters were reviewed.The causes of large-fruit variation can be classified into two types of chromosome doubling and fruit weight control gene mutation;The peel color variation was caused by the genetic mutation involved in anthocyanin,chlorophyll or cork biosynthetic pathway;The S-loci mutation led to the spontaneous variation of self-compatibility.The effectiveness of pear bud sport breeding for different quality improvement was discussed,and the future research and technology development related to pear bud sport breeding were prospected at last.