棉花根系生长与叶片衰老的协调性
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王素芳,薛惠云,张志勇,汤菊香
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Coordination of root growth and leaf senescence in cotton
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Su-Fang WANG,Hui-Yun XUE,Zhi-Yong ZHANG,Ju-Xiang TANG
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表5 2012年不同基因型棉花根系长度密度、面积密度、体积密度及纵向分布
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Table 5 Longitudinal distribution of RLD, RSD, RVD for the two cotton genotypes in 2012
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日期
Date (month/day) | 土层深度
Soil depth
(cm) | 根长度密度
RLD (mm cm-3) | | 根表面积密度
RSD (mm cm-3) | | 根体积密度
RVD (mm3 cm-3) | | DP99B | 百棉1号Baimian 1 | DP99B | 百棉1号
Baimian 1 | DP99B | 百棉1号Baimian 1 | | 7/4 | 0-20 | 2.00 a | 2.17 a | | 2.50 a | 2.60 a | | 0.25 a | 0.25 a | | 20-40 | 1.61 a | 1.98 a | | 1.98 a | 2.53 a | | 0.19 a | 0.25 a | | 40-60 | 0.79 b | 1.11 a | | 1.20 b | 1.72 a | | 0.15 a | 0.21 a | | 60-80 | 0.30 a | 0.28 a | | 0.56 a | 0.51 a | | 0.08 a | 0.08 a | | 0-80 | 1.17 a | 1.38 a | | 1.56 a | 1.84 a | | 0.17 a | 0.20 a | | 纵向分布LD (%) | 30.17 a | 33.34 a | | 39.43 a | 43.63 a | | 52.38 a | 58.33 a | | 7/24 | 0-20 | 5.57 a | 5.08 a | | 6.02 a | 5.66 a | | 0.53 a | 0.51 a | | 20-40 | 3.24 a | 2.61 a | | 4.06 a | 2.82 b | | 0.40 a | 0.23 b | | 40-60 | 2.26 b | 3.36 a | | 2.55 b | 4.04 a | | 0.23 b | 0.38 a | | 60-80 | 1.20 a | 1.24 a | | 1.75 a | 1.67 a | | 0.21 a | 0.19 a | | 0-80 | 3.07 a | 3.07 a | | 3.60 a | 3.55 a | | 0.34 a | 0.33 a | | 纵向分布LD (%) | 39.24 b | 59.81 a | | 42.64 b | 67.38 a | | 47.73 b | 77.14 a | | 8/11 | 0-20 | 9.26 a | 7.28 b | | 8.38 a | 6.59 b | | 0.62 a | 0.47 a | | 20-40 | 3.67 a | 2.93 a | | 3.75 a | 2.94 b | | 0.30 a | 0.23 a | | 40-60 | 3.27 a | 3.49 a | | 3.67 a | 3.89 a | | 0.34 a | 0.34 a | | 60-80 | 2.06 a | 1.56 a | | 2.54 a | 2.14 a | | 0.25 a | 0.23 a | | 0-80 | 4.57 a | 3.82 b | | 4.59 a | 3.89 b | | 0.38 a | 0.32 a | | 纵向分布LD (%) | 41.26 b | 49.48 a | | 51.21 b | 63.28 a | | 65.12 b | 81.82 a | | 9/3 | 0-20 | 6.47 b | 8.85 a | | 6.62 b | 8.66 a | | 0.53 b | 0.68 a | | 20-40 | 3.12 a | 3.39 a | | 3.11 a | 3.67 a | | 0.25 a | 0.32 a | | 40-60 | 2.56 a | 2.16 a | | 2.67 a | 2.20 a | | 0.21 a | 0.19 a | | 60-80 | 1.40 a | 1.66 a | | 1.91 a | 2.33 a | | 0.21 a | 0.25 a | | 0-80 | 3.39 a | 4.01 a | | 3.58 a | 4.21 a | | 0.30 a | 0.36 a | | 纵向分布LD (%) | 41.31 a | 31.22 b | | 47.12 a | 36.71 b | | 54.05 a | 44.68 b | | 9/23 | 0-20 | 6.91 b | 9.24 a | | 9.10 b | 11.42 a | | 0.98 b | 1.12 a | | 20-40 | 3.75 b | 5.18 a | | 4.35 b | 5.57 a | | 0.40 a | 0.49 a | | 40-60 | 3.07 b | 3.95 a | | 3.28 b | 4.66 a | | 0.28 b | 0.45 a | | 60-80 | 1.37 b | 3.06 a | | 1.88 b | 3.89 a | | 0.21 b | 0.40 a | | 0-80 | 3.78 b | 5.36 a | | 4.65 b | 6.38 a | | 0.47 b | 0.62 a | | 纵向分布LD (%) | 41.67 b | 48.65 a | | 38.33 b | 50.29 a | | 35.38 b | 52.63 a | | 10/13 | 0-20 | 6.03 b | 9.86 a | | 7.05 b | 10.87 a | | 0.68 b | 0.95 a | | 20-40 | 3.00 b | 3.47 a | | 4.04 b | 5.52 a | | 0.42 b | 0.70 a | | 40-60 | 1.99 b | 3.55 a | | 2.36 b | 4.31 a | | 0.23 b | 0.42 a | | 60-80 | 1.17 b | 1.88 a | | 1.48 b | 2.66 a | | 0.15 b | 0.30 a | | 0-80 | 3.05 b | 4.69 a | | 3.73 b | 5.84 a | | 0.37 b | 0.59 a | | 纵向分布LD (%) | 34.99 b | 40.67 a | | 34.63 b | 42.53 a | | 34.62 b | 43.59 a |
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