柑桔陷痕果发生规律调查

Investigation on the Occurrence Regularity of Fruit Pitting in Citrus

2007年和2008年调查了不同柑桔品种的陷痕果发生率,包括广东省龙门县、廉江市、增城市的红江橙,江西省安远县、寻乌县,广东省中山市的华盛顿脐橙、朋娜脐橙、纽荷尔脐橙、纳维林娜脐橙和卡拉卡拉脐橙。结果表明:不同品种的陷痕果率差异显著,不同柑桔品种在不同年份的陷痕果率无显著性差异;纳维林娜脐橙、卡拉卡拉脐橙、华盛顿脐橙、红江橙是高陷痕果率品种,纽荷尔脐橙是低陷痕果率品种。山地种植的沙糖桔陷痕果率显著大于水田的,树冠外围陷痕果发生比例显著小于树冠内膛。随着树龄增长,纽荷尔脐橙的陷痕果率随之增加。

Occurrence rates of pitting fruit of different citrus cultivars were investigated in 2007 and 2008. These cultivars included Hong Jiang sweet orange in Longmen county, Zengcheng and Lian- jiang city of Guangdong province, Washington, Bonanza, Newhall, Navelina and Caracara navel oranges in Anyuan and Xunwu county of Jiangxi province, Zhongshan city of Guangdong province. The results showed the occurrence of fruit pitting of different species and cultivars was significantly different but the same cultivar did not show significant differences between different years. Fruit pitting was significantly higher on fruits of Navelina, Calacala, Washington navel orange and Hong Jiang＇ sweet oranges while that of Newhall navel orange was low. The fruit from inner crown were more prone to fruit pitting than those from outer crown. Fruit pitting on trees of Shatangju planted on mountains was more severe than that planted on paddy fields. Fruit pitting increased in Newhall navel orange as trees grew older.