LI Deming,CAI Xinglai,ZHOU Man.Cold Tolerance Test of Different Watermelon Rootstock Cultivars[J].Northern Horticulture,2015,39(23):45-47.[doi:10.11937/bfyy.201523013]
不同西瓜砧木耐寒性试验
- Title:
- Cold Tolerance Test of Different Watermelon Rootstock Cultivars
- Keywords:
- watermelon; rootstock; graft; yield; cold tolerance; disease index
- 文献标志码:
- A
- 摘要:
- 以西瓜自根苗（“新1号”）和7种砧木（“海砧1号”、“普通小籽”、“南湘白籽”、“铁木真”、“昌砧力士”、“雪中甲”、“刚健1号”，接穗均为“新1号”）嫁接苗为试材，研究比较了海南冬季低温期间西瓜耐寒性。结果表明：除“刚健1号”外其余6种砧木嫁接苗在寒害期间叶绿素、脯氨酸（Pro）含量随处理时间延长而降低，丙二醛（MDA）和可溶性蛋白质含量则随处理时间延长而升高。嫁接苗叶绿素和Pro含量高于自根苗，MDA和可溶性蛋白质含量低于自根苗；“刚健1号”叶绿素和Pro含量低于自根苗，MDA和可溶性蛋白质含量高于自根苗（可溶性蛋白质略高）。就病情指数而言，“刚健1号”受害情况最重，自根苗受害稍轻，其余砧木嫁接苗寒害症状均较轻。
- Abstract:
- Taking one cultivar of self-rooted seedling(‘Xin No.1’) and seven cultivars of graft seedlings (rootstick were ‘Haizhen No.1’，‘Putongxiaozi’，‘Nanxiang Baizi’，‘Tiemuzhen’，‘Changzhenlishi’，‘Xuezhongjia’，‘Gangjian No.1’.common scion was ‘Xin No.1’.) as materials (their codes were A1，A2，A3，A4，A5，A6，A7，A8)，cold tolerance of Hainan watermelon at winter low temperature were studied.The results showed that，content of chlorophyll and prolin(Pro) decreased with processing time about six cultivars of graft seedlings (except of ‘Gangjian No.1’ rootstock seedling).Then，content of malondialdehyde(MDA) and soluble protein increased with processing time.Content of chlorophyll in graft seedling was higher than that in self-rooted seedling，but the content of MDA and soluble protein were inverse.Content of chlorophyll and soluble protein in ‘Gangjian No.1’ rootstock seedling were lower than that of self-rooted seedling，but the content of MDA and soluble protein were inverse(soluble protein was slightly high).In terms of disease index，graft seedling of ‘Gangjian No.1’ had the highest disease-sensitive index，and its self-rooted seedling was slightly low.Then，chilling damage was mild about graft seedlings of other rootstock cultivars.
参考文献/References:
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备注/Memo
第一作者简介：李德明（1972-），男，博士，副教授，研究方向为蔬菜生理生化应用技术及园林植物应用。E-mail：lidmn@163.com.责任作者：蔡兴来（1962-），男，本科，研究员，研究方向为瓜类栽培及遗传育种。E-mail：13307531052@163.com.基金项目：国家星火计划资助项目（2012GA800002）。