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用从小麦、棉花、水稻根际分离的24株植物根际促生菌株处理小麦幼苗,进行半固体和/或盆栽试验,测定小麦根系和地上部分的9项指标。半固体试验对根干重促生显著的9株菌株中,7株对根总长、9株对根总表面积、5株对根尖数、8株对分支数和株高及7株对茎干重促生显著。盆栽试验对根干重促生显著的10株菌中,全部对根总长和根总表面积、6株对根尖数、8株对根分支数、9株对株高及7株对茎干重促生显著。半固体和盆栽试验中显著促生指标均达5个以上的5株菌株中,4株为假单胞菌,表明假单胞菌对小麦的促生效果较好。PGPR对小麦根的总长度、总表面积、根尖数、分支数有明显促生作用,这些指标与小麦根干重、株高和茎干重显著相关。
Wheat seedlings were treated with 24 rhizosphere inoculation strains isolated from the rhizosphere of wheat, cotton and rice and subjected to semi-solid and / or pot experiment to determine 9 indexes of wheat root and shoot. In the semi-solid test, among the 9 strains that had significant root growth promoting, 7 pairs of total root length, 9 pairs of root total surface area, 5 pairs of root tips, 8 pairs of branches and plant height and 7 pairs of stems Emphasis on promoting students. Pot experiment showed that the total length of roots and total surface area of roots, 6 pairs of root tips, 8 branches to roots, 9 plant height and 7 stems weight Promote growth significantly. In the semi-solid and pot experiment, five of the five strains with significant growth-promoting index were among the five strains, and four strains were Pseudomonas, indicating that Pseudomonas sp. Had a better promoting effect on wheat. PGPR had obvious promoting effect on the total length of wheat root, total surface area, root tip number and branch number, and these indexes were significantly correlated with dry root weight, plant height and stem weight of wheat.