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越冬枝条嫁接对红麻雄性不育系与保持系生长发育与越冬抗寒性的影响
作者: 黄其椿1  2  刘吉敏3  周瑞阳2 *  李 健2  周 琼2  李初英1  赵洪涛1  
单位: (1广西农业科学院经济作物研究所  南宁 530007;2 广西大学农学院  南宁 530005;  
关键词: 红麻  雄性不育系  保持系  嫁接  生长发育  抗寒性  
分类号:S563.501
出版年,卷(期):页码:2011 ,42 ( 11 ): 页码:1329-1331
摘要:

【Objective】The present study was aimed to provide theoretical basis for establishing production technology system for kenaf male sterile line, maintainer line and hybrid seed production. 【Method】In this experiment, one-bud cut-grafting method was used. Buds obtained from overwintering branches of kenaf male sterile line 763A and maintainer line 763B were grafted on new overwintering branches of cotton rose (Hibiscus mutabilis L.) and kenaf wild variety H040, and then cutting in bed. The grafted cutting branches were transplanted in fields and their performance was compared with stock cuttings and scion seedlings. 【Result】The results are as follows:(1) The survival rate of grafting with male sterile line was significantly higher than that with maintainer line. When H040 was used as rootstock, the survival rate was recorded higher than others. When the cottonrose was used as rootstock, the survival rate was lower; (2)The grafted plants were dwarf, especially when the cottonrose was used as rootstock; (3) Grafting had little impact on the budding and flowering; (4) The withered top length of the plants was smaller than that of their stock plants when cottonrose and H040 were used as rootstock. The grafted plants showed strong cold resistance; (5) The number of fruits per plant was significantly and negatively correlated with the withered top length of the plants. The higher kenaf fruits were related with worse cold resistance. 【Conclusion】The effects of grafting kenaf with overwintering branches on growth and cold resistance of kenaf male sterile lines and maintainer lines were different. The grafted plants were dwarf. Appropriate rootstock could improve the cold resistance of grafted plants.

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