CPPU对网纹甜瓜果实生长发育和品质的影响

石瑜1,2, 王敬民2, 叶红霞1, 汪俏梅1, 汪炳良1,*
1浙江大学蔬菜研究所, 杭州310029; 2淄博市农业科学研究院蔬菜研究所, 山东淄博255033

通信作者:汪炳良;E-mail: blwang@zju.edu.cn

摘 要:

网纹甜瓜(Cucumis melo var. reticulatus)是葫芦科甜瓜属的变种, 是厚皮甜瓜的一种。在我国南方地区, 由于光照弱、雨水多, 网纹甜瓜的果实品质和贮藏性并不理想。本试验以网纹甜瓜品种‘浙甬2号’为材料, 对开花期子房进行不同浓度N-(2-氯-4-吡啶基)- N'-苯脲(CPPU)喷施处理, 以探讨CPPU处理对坐果率、果实生长发育及果实品质的影响。结果表明, 在本试验所及浓度范围内, CPPU处理开花期子房, 可以提高坐果率, 加快果实生长, 增加成熟果实重量; 不同CPPU处理浓度对成熟果实糖及维生素C含量的影响存在一定差异, 10 mg·L-1尤其是20 mg·L-1 CPPU处理提高了果实可溶性糖、蔗糖、果糖、葡萄糖以及维生素C含量, 而30 mg·L-1 CPPU处理成熟果实, 其糖分和维生素C含量反而低于对照。表明适宜的CPPU处理浓度可以促进网纹甜瓜坐果及果实发育, 增加果实产量, 提升果实品质。本研究结果为CPPU在网纹甜瓜生产上的合理应用提供了一定的理论和实践依据。

关键词:CPPU; 网纹甜瓜; 坐果率; 单瓜重; 糖

收稿:2017-07-03   修定:2017-11-28

资助:国家科学技术支撑项目(2013BAD20B02)、浙江省重大育种专项(2016C02051-4-3)、山东省现代农业产业技术体系蔬菜创新团队(SDAIT-05-16)和淄博市科学技术发展计划项目(2016kj010053)。

Effects of CPPU on fruit growth, development and quality of netted melon

SHI Yu1,2, WANG Jing-Min2, YE Hong-Xia1, WANG Qiao-Mei1, WANG Bing-Liang1,*
1Institute of Vegetable Science, Zhejiang University, Hangzhou 310029, China; 2Institute of Vegetable Science, Zibo Academy of Agricultural Sciences, Zibo, Shandong 255033, China

Corresponding author: WANG Bing-Liang; E-mail: blwang@zju.edu.cn

Abstract:

Netted melon (Cucumis melo var. reticulatus) is a variety of Cucumis genus in Cucurbitaceae family. It is one type of the thick-peel melon. Fruit quality and storability of netted melon are unsatisfactory due to weak sunlight and high rainfall in southern China. In this experiment, in order to investigate the effects of N-(2-chloro-4-pyridyl)- N'-phenylurea (CPPU) treatment on fruit setting rate, growth and development and quality, different doses of CPPU were sprayed onto ovaries of female flowers of netted melon (cv. ‘Zhe-yong No. 2’). Results showed that within tested range of CPPU concentration, CPPU treatment of female flower ovaries elevated fruit setting rate, accelerated fruit growth and increased fruit weight of netted melon. However, little effect was observed in fruit shape index on ripe fruits. Effect of CPPU on sugar and vitamin C contents in ripe fruits varied with different CPPU concentrations. Contents of soluble sugar, sucrose, fructose, glucose and vitamin C in ripe fruits treated with 10 mg·L-1 especially 20 mg·L-1 CPPU were higher than those of control, while sugar and vitamin C contents in those treated with 30 mg·L-1 CPPU were lower than those of control. Overall, in netted melon, suitable CPPU concentration treatment not only promoted fruit set and development, but elevated fruit yield and quality as well. And these results will provide theoretical and practical basis for reasonable application of CPPU in netted melon production.

Key words: CPPU; netted melon; fruit setting rate; fruit weight; sugar

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