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以桑果高产、优质为目标,采用辐射诱变育种方法培育果用桑树新品种。对广东桑品种伦教408刚萌动的桑芽,以总剂量为0.06～0.08 kGy,剂量率为1 Gy/min的60Co-γ连续照射,然后将处理的桑芽进行单芽嫁接分离,选择形态出现变异的单株连续观察,对花果多的单株进一步培育,最终选育出果用桑树新品种红果2号。多年品种比较试验鉴定和区域试验鉴定中,红果2号的桑果产量分别比对照果桑品种粤椹大10(大10)提高39.33%和31.97%,其果实品质较好,维生素C以及Ca、Fe、Zn的含量极显著高于大10,适合鲜食和加工。红果2号的综合性状优良,是具有推广潜力的果用桑树新品种。
With mulberry high yield, high quality as the goal, using radiation mutation breeding method to cultivate new varieties of mulberry fruit. The mulberry buds of the mulberry variety Bonjour 408 in Guangdong Province were continuously irradiated with 60Co-γ at a total dose of 0.06-0.08 kGy and a dose rate of 1 Gy / min. The mulberry buds were then subjected to single buds grafting and separation, Variation of the continuous observation of the individual plants, and more fruit and plant further breeding, and finally bred fruit variety mulberry red fruit No. 2. Compared with the control fruit mulberry varieties Yue 10 (DA 10), the yield of mulberry fruit of Hongguo 2 was increased by 39.33% and 31.97%, respectively, for many years of comparative trial identification and regional trial identification. The fruit quality was better, the contents of vitamin C and Ca, Fe, Zn content was significantly higher than the large 10, suitable for fresh and processing. Hongguo 2 excellent comprehensive traits, is to promote the potential of new varieties of mulberry fruit.