摘要
为了研究两株根际促生菌对萝卜农艺性状及营养品质的影响,试验采用玫瑰色考克氏菌SDB9和耐寒短杆菌SDB5两株根际促生菌对白萝卜品种‘邢育六号’幼苗进行灌根处理,测定萝卜农艺性状和营养品质指标。结果表明:与对照组(CK)相比,两种菌处理下萝卜的根型发生改变,根长变短,根直径增大,SDB9菌使其改变的效果更显著;SDB9菌对萝卜的产量的增加效果要高于SDB5菌。SDB5菌还能使萝卜根中维生素C、可溶性糖、可溶性蛋白质、还原性糖、淀粉、纤维素均有不同程度的提高,其中维生素C、可溶性糖和淀粉含量有了显著或极显著的提高。而SDB9菌除了显著提高可溶性蛋白外,还显著降低了还原性糖和纤维素,说明SDB9菌能影响了萝卜的营养品质。因此,SDB9菌能显著提高萝卜的产量但对品质有一定的影响,SDB5菌能稍微提高萝卜的产量但能改善萝卜的营养品质,两种菌在萝卜的栽培中均有其利用价值。
To investigate the effects of two rhizosphere plant growth-promoting bacteria on the agronomic traits and nutritional quality of radish,this experiment utilized Kocuria rosea SDB9 and Brevibacterium frigoritolerans SDB5 to irrigate seedlings of the white radish variety‘Xingyu No.6’.The agronomic traits and nutritional quality indicators were then measured.The results showed that,compared with the control group(CK),treatment with both bacterial strains altered radish root morphology—specifically,root length was reduced and root diameter increased—with SDB9 exhibiting a more pronounced effect.The yield improvement effect of SDB9 was greater than that of SDB5.SDB5 also enhanced the contents of vitamin C,soluble sugars,soluble proteins,reducing sugars,starch,and cellulose in radish roots to varying degrees,with significant or highly significant increases in vitamin C,soluble sugars,and starch.In contrast,SDB9 significantly increased soluble protein levels but significantly reduced reducing sugars and cellulose,indicating that SDB9 affects the nutritional quality of radish.In conclusion,SDB9 can significantly enhance radish yield but may negatively effect quality,while SDB5 slightly increases yield but improves nutritional quality.Both bacterial strains demonstrate potential value in radish cultivation.
作者
陈俊如
相微微
杨芸岫
武丹丹
王建武
CHEN Junru;XIANG Weiwei;YANG Yunxiu;WU Dandan;WANG Jianwu(College of Advanced Agricultural Sciences,Yulin University,Yulin,Shaanxi 719000,China)
出处
《陕西农业科学》
2025年第5期57-61,共5页
Shaanxi Journal of Agricultural Sciences
基金
国家自然科学基金项目(32060027)。
