基于聚乙烯袋水培法9个甜瓜品种对埃及列当的抗性鉴定

【目的】基于聚乙烯袋水培法研究甜瓜不同品种对列当的抗性鉴定方法,为甜瓜抗列当品种选育提供技术支撑。【方法】利用聚乙烯袋水培法,研究不同甜瓜品种根系分泌物对埃及列当种子萌发诱导活性及寄生的影响,评价甜瓜品种抗性。【结果】聚乙烯袋水培9个接种埃及列当种子的甜瓜品种,其根系分泌物都可刺激列当种子发芽,但瘤状茎数量差异显著。用瘤状茎数量评价9个甜瓜品种对埃及列当的抗性,结果表明,参试甜瓜品种对列当寄生的抗感性存在差异,k2-2、k2-7及CEZ这3个品种抗性优于其他品种。【结论】聚乙烯袋水培法可作为有效的甜瓜列当抗性室内鉴定方法。

Identification of Resistance of Nine Varieties of Cucumis melo L. to Orobanche aegyptiaca Using a Polythene Bags-based Hydroponic Culture Method

【Objective】 The research aims to present the feasible method of identifying the resistance of Cucumis melo L. cultured in polythene bags to Orobanche aegyptiaca in the hope of providing technical support for the breeding of varieties resistant to O. aegyptiaca. 【Methods】The study hydroponically cultured different varieties of C. melo L. in polythene bags to investigate influences of root exudates of various varieties on the induction activity for seed germination and parasitism of O. aegyptiaca, so as to assess resistances of various varieties. 【Results】 For the nine varieties of C. melo L. inoculated with O. aegyptiaca through hydroponic culture in polythene bags, their root exudates stimulated seed germination of O. aegyptiaca, while they had significant differences in terms of the number of shoot elongation. Then, the number of shoot elongation was taken to assess the resistances of the nine varieties of C. melo L. to O. aegyptiaca. The results indicated that test varieties exhibited differences with regard to the resistances to parasitism of O. aegyptiaca, and varieties k2-2, k2-7, and CEZ were superior to others in terms of the resistance. 【Conclusions】Identification results for resistances of the nine varieties of C. melo L. to O. aegyptiaca using hydroponic culture in polythene bags verified that the culture method is an effective indoor approach for identifying resistance of C. melo L. to O. aegyptiaca.