枣树二倍体与四倍体控制杂交获得三倍体种质

IF 1.7 4区 农林科学 Q2 HORTICULTURE
F. Yan, Lihu Wang, Xingjuan Zheng, Zhi Luo, Jiurui Wang, Mengjun Liu
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引用次数: 6

摘要

摘要‘晨光’是秋水仙碱诱导的中国大枣(Ziziphus jujuba Mill.)首次发布的四倍体品种(2n = 4x = 48)。本研究以“晨光”为亲本,制备三倍体种质。2013 - 2015年,采用尼龙网罩养本和蜜蜂传粉的方法,对同源四倍体‘晨光’与二倍体‘东早’进行了对照杂交。总共生产了606个果实,但“东早”只有17个种子,“晨光”一个种子也没有。温室直接播种法的出苗率高于胚培养法。最终在温室中获得4株后代植株,经SSR标记技术鉴定均为原生态杂交种。最后通过流式细胞术鉴定出3个三倍体和1个二倍体。因此,具有较高花粉活力和单花药花粉数的四倍体‘晨光’可以作为可靠的2n花粉供体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Acquisition of triploid germplasms by controlled hybridisation between diploid and tetraploid in Chinese jujube
ABSTRACT‘Chenguang’ is the first released tetraploid cultivar (2n = 4x = 48) of Chinese jujube (Ziziphus jujuba Mill.) induced by colchicine. The purpose of this study was to create triploid germplasms by using ‘Chenguang’ as a parent. The controlled crosses between autotetraploid ‘Chenguang’ and diploid ‘Dongzao’ were carried out from 2013 to 2015 by maintaining the 2 parents in a nylon net and employing bees as pollinator. A total of 606 fruits were produced, yet only 17 seeds were obtained from ‘Dongzao’ and none from ‘Chenguang’. Direct sowing of the seeds in greenhouse showed a higher seedling rate than embryo culture. Four progeny plants were eventually obtained in the greenhouse and all of them were confirmed as authentic hybrids by SSR marker technique. At last, 3 triploids and 1 diploid were identified by flow cytometric analysis. Consequently, tetraploid ‘Chenguang’ with high pollen vitality and pollen number per anther could be used as a reliable 2n pollen provider, and the 2x × 4x cross combin...
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来源期刊
CiteScore
3.90
自引率
5.30%
发文量
67
审稿时长
3 months
期刊介绍: The Journal of Horticultural Science and Biotechnology is an international, peer-reviewed journal, which publishes original research contributions into the production, improvement and utilisation of horticultural crops. It aims to provide scientific knowledge of interest to those engaged in scientific research and the practice of horticulture. The scope of the journal includes studies on fruit and other perennial crops, vegetables and ornamentals grown in temperate or tropical regions and their use in commercial, amenity or urban horticulture. Papers, including reviews, that give new insights into plant and crop growth, yield, quality and response to the environment, are welcome, including those arising from technological innovation and developments in crop genome sequencing and other biotechnological advances.
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