Development and Validation of High-glucoraphanin Broccoli F-1 Hybrids and Parental Lines

文献类型： 外文期刊

第一作者： Gu, Honghui

作者： Gu, Honghui;Wang, Jiansheng;Yu, Huifang;Zhao, Zhenqing;Sheng, Xiaoguang;Chen, Jisuan;Xu, Yingjun

作者机构：

关键词： Brassica oleracea;breeding;glucosinolate;progoitrin

期刊名称：JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE （ 影响因子：1.144； 五年影响因子：1.617 ）

ISSN： 0003-1062

年卷期： 2014 年 139 卷 4 期

页码：

收录情况： SCI

摘要： Sulforaphane is an anticarcinogenic isothiocyanate derived from 4-methylsulfinylbutyl glucosinolate (glucoraphanin), which is abundant in broccoli (Brassica oleracea var. italica) florets. However, some breakdown products from alkenyl glucosinolates present in many broccoli cultivars, particularly oxazolidine-2-thione hydrolyzed from 2-(R)-hydroxy-3-butenyl glucosinolate (progoitrin), have potentially harmful effects on human and animal health. The main objective of this study was to improve the glucoraphanin concentration in F-1 hybrids by cross-breeding with inbred lines and doubled haploids. Glucoraphanin concentrations in 31 of the 61 F-1 hybrids were significantly higher (P=0.05) than that of the commercial cultivar (Youxiu) with the highest concentration of glucoraphanin (4.18 mu mol.g(-1) dry weight) among eight reference cultivars. Sixteen of the F-1 hybrids had glucoraphanin concentrations 3-fold higher than that of 'Youxiu'. Alkenyl glucosinolates were not detected in the new hybrids as a result of the parents having few of these compounds but were found in five reference cultivars. Most F-1 hybrids showed moderate indole glucosinolate concentrations and acceptable commercial traits. IL609 and IL702.2 were determined to be promising parental lines as a result of the high glucoraphanin concentration that they and their offspring contained. The findings also indicated that some F-1 hybrids do not show the high-glucoraphanin character of their parents; consequently, evaluation of these F-1 hybrids for their glucosinolate content is required for breeding high-glucoraphanin broccoli.

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