Crops ›› 2017, Vol. 33 ›› Issue (2): 34-37.doi: 10.16035/j.issn.1001-7283.2017.02.006

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Relation of the Stem Characters and Lodging Resistance of Zhoumai 22

Han Yulin,Yin Guihong,Yang Guangyu,Tang Jianwei,Wang Lina,Huang Feng,Zhang Qian,Li Nannan,Lü Yongjun,Li Shuncheng,Zou Shaokui,Gao Yan   

  1. Zhoukou Academy of Agricultural Science/Engineeering technology Center of Wheat Germplasm Improvement of Henan Province,Zhoukou 466001,Henan,China
  • Received:2016-11-18 Revised:2017-02-23 Online:2017-04-15 Published:2018-08-26
  • Contact: Guihong Yin

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Abstract:

In order to analysis the stem chaeracters of Zhoumai 22, four wheat varieties with the same mature period were selected as the test material. Different characters of the second bottom elongate stem、stem mechanical strength and Lodging index were measured. Results showed that: there was no difference in plant height and internode length below the spike between 4 varities, but Zhoumai 22 had significant difference from them in the second bottom internode length, the internode stem wall and the width. The second bottom stem fresh and dry density of Zhoumai 22 are both the largest (0.790g/cm 3 and 0.188g/cm 3, respectively), which are significant differences from Luomai 21 and Xinmai 18. The stem mechanical strength of Zhoumai 22 was the largest as 0.790g/cm 3,and its lodging index was the smallest as 0.188g/cm 3, which were significant difference from others.

Key words: Wheat, Zhoumai 22, Stem characters, Lodging resistance

Table 1

Differences of plant height and internode length cm"

品种
Variety		 株高
Plant heigh		 穗下节间长
Length of internode below spike		 基部第二节间Basal second internode
节间长
Length of internode		 直径
Diameter		 壁厚
Thickness		 壁厚/直径
Thickness/Diameter
周麦18 Zhoumai 18 78.4 26.1 6.16b 0.449b 0.115a 0.51b
周麦22 Zhoumai 22 80.8 24.9 6.13b 0.425b 0.117a 0.55a
洛麦21 Luomai 21 84.7 22.3 7.29a 0.493a 0.104b 0.42c
新麦18 Xinmai 18 77.8 16.5 6.75a 0.486a 0.103b 0.42c

Table 2

Differences on the volume, weight, and fresh/dry density of the second internode"

品种
Variety		 总体积(cm3)
Total volume		 净体积(cm3)
Net volume		 鲜重(g)
Fresh weight		 干重(g)
Dry weight		 鲜密度(g/cm3)
Fresh density		 干密度(g/cm3)
Dry density
周麦18 Zhoumai 18 0.965c 0.745bc 0.602 0.141ab 0.808a 0.189b
周麦22 Zhoumai 22 0.869c 0.694c 0.567 0.135ab 0.817a 0.195a
洛麦21 Luomai 21 1.391a 0.926a 0.588 0.149a 0.635b 0.161c
新麦18 Xinmai 18 1.252b 0.836b 0.539 0.131b 0.645b 0.157c

Table 3

Correlation analysis of the mechanical strength and lodging index"

品种Variety 重心高度Bary center height (cm) 单茎鲜重Fresh weight (g) 机械强度Mechanical strength (g) 倒伏指数Lodging index
周麦18 Zhoumai 18 48.4bc 10.5 642.8b 0.791b
周麦22 Zhoumai 22 49.9ab 10.2 685.7a 0.742c
洛麦21 Luomai 21 50.8a 11.3 656.0b 0.875a
新麦18 Xinmai 18 45.6c 10.6 568.9c 0.850a
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