^(60)Co-γ射线诱变“和平红阳”中华猕猴桃筛选大果突变的研究（英文）

Screening larger fruit mutant from fruit spurs of Actinidia chinensis planch treated by ^(60)Co-γ ray

为了提高"和平红阳"中华猕猴桃单位面积产量,采用25 Gy60Co-γ射线处理已开花结果的果枝;将50~100个带一休眠芽的枝段嫁接于同一成年植株的一年生枝砧上,从2 600多个接芽萌发枝蔓上发现了3个结不同形状果实的果枝,将其中一个结大果的实变体嫁接扩繁成为100株以上的无性繁殖系.大果突变体单果质量比原品种增加15.2%,其果肉含糖量和维生素C质量分数与原品种相比没有明显差异,单株产量提高13.4%.

To improve Actinidia chinensis Planch cv. Heping Hongyang yield, the fruit spurs with dor- mant blossom buds were radiated with 25 Gy ^60Co-γ ray, and 50 - 100 shoot sections with a bud were grafted on annual vines of each stock plant. Three fruit-spurs bearing different shapes of fruits were obtained in the vines germinated from over 2 600 grafts, and a larger fruit mutant was selected to propagate into a clone with over 100 plants by top graft. The fruits of the larger fruit mutant were 15.2% larger than those of its original cultivar, its sugar content and vitamin C content were not significantly different from those of its original cultivar, and the fruit yield per plant was 13.4% higher than that of its original cultivar.