Crops ›› 2016, Vol. 32 ›› Issue (1): 140-143.doi: 10.16035/j.issn.1001-7283.2016.01.026

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Seeding Stage Response to Different Water Availability and Drought Resistance Evaluation of Foxtail Millet

Dai Xiaodong,Xu Xinzhi,Zhu Cancan,Yang Yufeng,Wang Chunyi,Yang Xiaoping,Yang Guohong,Li Junxia   

  1. Cereal Crops Institute, Henan Academy of Agricultural Sciences,Zhengzhou 450002,Henan,China
  • Received:2015-10-10 Revised:2015-11-17 Online:2016-02-15 Published:2018-08-25
  • Contact: Junxia Li

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Abstract:

The objective of this study is to investigate the effects of drought on plant growth and root growth of foxtail millet seedlings subjected to well watered, moderate water stress and severe water stress, respectively, with six varieties and evaluated drought resistance. The results indicated that well watered was the most advantages for plant growth and root growth, and plant height, leaf area of top three leaf, root length, root surface, root surface area, root volume, root tip number decreased, along with the water stress strengthening. Root-shoot ratio of Shanxi 2010 had a maximal increase slope, 15.95% and 25.36% under moderate water stress and severe water stress, respectively, among six varieties. So Shanxi 2010 showed better drought resistance.

Key words: Foxtail millet, Drought stress, Drought resistance evaluation

Table 1

Effects of different water treatments on plant height, leaf area of top three leaf,shoot dry weight, root dry weight and root-shoot ratio"

材料
Material		 水分处理
Water treatment		 株高
Plant height (cm)		 顶三叶叶面积
Leaf area of top three leaf (cm2)		 幼苗干物质质量
Shoot dry weight (g)		 根干物质质量
Root dry weight (g)		 根冠比
Root-shoot ratio
山西2010
Shanxi2010		 W1 43.0a 76.70a 4.12a 3.15a 0.765c
W2 36.7b 48.11b 3.43b 3.04b 0.887b
W3 27.1c 36.59c 3.04c 2.92c 0.959a
郑12
Zheng12		 W1 63.7a 123.81a 4.71a 3.54a 0.752c
W2 50.7b 74.84b 3.95b 3.19b 0.809b
W3 35.1c 45.16c 3.40c 3.01c 0.886a
A1
 W1 66.9a 147.93a 4.89a 3.61a 0.739c
W2 51.7b 61.88b 3.97b 3.20b 0.807b
W3 39.1c 57.56b 3.46c 3.01c 0.868a
郑9188
Zheng9188		 W1 52.0a 90.65a 4.21a 3.36a 0.797b
W2 41.4b 51.56b 3.61b 3.19b 0.886a
W3 35.5c 21.92c 3.39c 3.04c 0.897a
冀谷31
Jigu31		 W1 58.3a 118.27a 4.48a 3.54a 0.792b
W2 47.4b 82.13b 3.83b 3.31b 0.865a
W3 35.5c 43.42c 3.40c 2.99c 0.880a
太选14号
Taixuan14		 W1 55.6a 89.87a 4.00a 3.26a 0.815b
W2 41.9b 55.72b 3.36b 2.98b 0.887a
W3 28.1c 24.66c 3.16c 2.87c 0.908a

Table 2

Effects of different water treatments on the root growth"

材料名称
Material		 水分处理
Water treatment		 根长
Root length (cm)		 根表面积
Root surface area (cm2)		 根体积
Root volume (cm3)		 根尖数
Root tip number
山西2010 W1 1 179.26a 198.38a 2.67a 3 050.33a
Shanxi2010 W2 1 087.02a 166.76b 2.04b 2 383.33b
W3 516.31b 63.95c 0.64c 1 135.33c
郑12 W1 1 164.24a 168.33a 1.96a 2 695.67a
Zheng12 W2 464.57b 78.35b 1.06b 985.00b
W3 97.27c 15.89c 0.22c 189.67c
A1
 W1 1 537.02a 285.65a 4.23a 3 039.33a
W2 938.09b 182.83b 2.84b 1 830.67b
W3 679.51c 85.86c 0.86c 1 622.67b
郑9188 W1 1 099.05a 203.37a 3.01a 2 221.33a
Zheng9188 W2 891.18b 141.29b 1.79b 1 682.33b
W3 639.71c 79.38c 0.79c 1 341.00c
冀谷31 W1 994.37a 216.16a 3.74a 2 057.00a
Jigu31 W2 770.42b 156.20b 2.54b 1 514.00b
W3 539.38c 89.44c 1.20c 1 094.00c
太选14号 W1 829.98a 149.40a 2.16a 1 754.33a
Taixuan14 W2 454.10b 77.44b 1.06b 846.00b
W3 344.45c 39.11c 0.35c 822.33b

Fig.1

Cluster analysis of relative increase value of root-shoot ratio of six varieties under moderate drought"

Fig.2

Cluster analysis of relative increase value of root-shoot ratio of six varieties under severe drought"

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