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厚皮甜瓜腔内种子的生长发育规律
作者: 刘文君1 周建辉1 黄凤婵1  曼1* 范爱丽1 高忠奎2 陈宝玲1 
单位: (1广西农业科学院 蔬菜研究所 南宁 530007 2广西农业科学院 科研基地管理处 南宁 530007) 
关键词: 厚皮甜瓜 种子 腔内发芽 采种时间 
分类号:S652.01
出版年,卷(期):页码:2017,48(8):1448-1451
摘要:

【目的】分析厚皮甜瓜腔内种子的生长发育规律,为提高厚皮甜瓜制种产量和质量提供参考依据。【方法】以具有腔内种子发芽特性的厚皮甜瓜自交系05-6为试验材料,分析授粉后果实腔内种子的生长发育规律、腔内种子发芽的发生时期和变化趋势,比较不同授粉天数果实腔内种子的饱满程度、数量、发芽率、成苗率和幼苗健壮程度差异。【结果】厚皮甜瓜腔内种子成熟时间比果实成熟时间早,授粉后第26 d种子已充分饱满。其中,未发芽种子的饱满度、数量、发芽和成苗能力及成苗的健壮程度与授粉后第35 d(即果实完全成熟时)相比差异不显著(P>0.05);已发芽种子数量显著少于授粉后第35 d腔内发芽种子数量(P<0.05)。【结论】提前摘瓜采种是降低厚皮甜瓜腔内种子发芽率的有效措施,厚皮甜瓜材料05-6的适宜采种时间为授粉后第26 d。

【Objective】The study were carried out to investigate growth and developmental regulation of intracavity seeds in muskmelon,and provide reference for improving seed production yield and quality. 【Method】The experiments used inbred line 05-6 whose seeds germinated in fruit as material. Seeds growth and development in fruit after pollination,occurrence time and change trend of intracavity seeds germination were analyzed. Differences of seeds plumpness,germinated seed number,germination rate, survival seedlings rate,robustness level of seedlings in different days after pollination were compared. 【Result】The maturity of intracavity seeds was earlier than muskmelon fruits. On day 26 after pollination,seeds were fully matured. In terms of the ungerminated seeds, compared with seeds on day 35 after pollination(when the fruit were completely mature),there were no significant(P>0.05) differences in seeds plumpness,number, germination ability,survival seedlings ability,robustness level of seedling. By contrary,the number of germinated seeds was significantly fewer than that in fruit on 35 d after pollination(P<0.05). 【Conclusion】Picking up fruit and collecting seeds in advance before fruits is matured fully is effective strategy for reducing seeds germination rate in fruit,and the most suitable picking time was day 26 after pollination for muskmelon 05-6.

基金项目:
国家现代农业产业技术体系广西特色水果创新团队建设项目(nycytxgxcxtd-04-19-10);广西自然科学基金项目(2013GXNSFBA019069,2015GXNSFBA139100);广西农业科学院科技成果转化项目(农成转2016015)
作者简介:
*为通讯作者,张曼(1970-),研究员,主要从事蔬菜遗传育种研究工作,E-mail:zm112@gxaas.net。刘文君(1980-),副研究员,主要从事蔬菜育种与生理研究工作,E-mail:liuwenjun@gxaas.net
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