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作物学报

作物学报 ›› 2019, Vol. 45 ›› Issue (3): 419-430.doi: 10.3724/SP.J.1006.2019.84087

• 耕作栽培·生理生化 • 上一篇    下一篇

不同甘薯品种抗旱性评价及耐旱指标筛选

张海燕1,解备涛1,汪宝卿1,董顺旭1,段文学1,*(),张立明2,*()   

  1. 1山东省农业科学院作物研究所 / 农业农村部黄淮海薯类科学观测实验站, 山东济南 250100
    2山东省农业科学院, 山东济南 250100
  • 收稿日期:2018-06-26 接受日期:2018-10-08 出版日期:2019-03-12 网络出版日期:2018-11-07
  • 通讯作者: 段文学,张立明
  • 作者简介:张海燕, E-mail: zhang_haiyan02@163.com|解备涛, E-mail: 279151695@qq.com
  • 基金资助:
    本研究由山东省薯类产业创新团队项目(SDAIT-16-09);国家现代农业产业技术体系建设专项资助(CARS-10-B08)

Evaluation of drought tolerance and screening for drought-tolerant indicators in sweetpotato cultivars

Hai-Yan ZHANG1,Bei-Tao XIE1,Bao-Qing WANG1,Shun-Xu DONG1,Wen-Xue DUAN1,*(),Li-Ming ZHANG2,*()   

  1. 1 Crop Research Institute of Shandong Academy of Agricultural Sciences / Scientific Observation and Experimental Station of Tubers and Root Crops in Huang-Huai-Hai Region, Ministry of Agriculture and Rural Affairs, Jinan 250100, Shandong, China
    2 Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
  • Received:2018-06-26 Accepted:2018-10-08 Published:2019-03-12 Published online:2018-11-07
  • Contact: Wen-Xue DUAN,Li-Ming ZHANG
  • Supported by:
    This study was supported by Shandong Province Modern Agricultural Technology System Tubers and Root Crops Innovation Team(SDAIT-16-09);the China Agriculture Research System(CARS-10-B08)

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摘要：

在人工控水条件下, 以15个甘薯品种为试验材料, 设置干旱胁迫和正常灌水2个处理, 研究了干旱胁迫条件下不同甘薯品种产量和农艺性状差异。根据产量抗旱系数法分级, 抗旱品种(抗旱系数≥0.6)为济薯21、济薯25、济徐23、济薯15、烟薯25; 中等抗旱品种(0.4≤抗旱系数<0.6)为徐薯18、济薯26、北京553、济紫薯2号、济薯18; 不抗旱品种(抗旱系数<0.4)为郑薯20、济紫薯3号、济薯22、济紫薯1号、凌紫。干旱胁迫导致甘薯的叶片数、蔓长、叶面积系数和生物量下降, 品种间降幅不同, 抗旱性强的品种降幅小, 抗旱性弱的品种降幅大。这些农艺性状指标与甘薯品种的抗旱性呈显著正相关, 可作为甘薯品种抗旱性鉴定的指标。徐薯18可作为甘薯品种抗旱性鉴定的标准品种。

关键词: 甘薯, 抗旱性, 综合评价, 鉴定指标

Abstract:

Field experiments were conducted under a rain proof shelter using 15 sweetpotato cultivars with drought stress treatment and well-watered treatment. The yield and agronomic traits of different sweetpotato cultivars under drought stress were studied. The sweetpotato cultivars were classified according to the drought resistance coefficient of each cultivar. The drought-tolerant cultivars (DC ≥ 0.6) included Jishu 21, Jishu 25, Jixu 23, Jishu 15, and Yanshu 25. The moderate drought-tolerant cultivars (0.4 ≤ DC < 0.6) included Xushu 18, Jishu 26, Beijing 553, Jizishu 2, and Jishu 18. The drought-sensitive cultivars (DC < 0.4) included Zhengshu 20, Jizishu 3, Jishu 22, Jizishu 1, and Ayamaraski. Drought stress caused the decline of leaf number per plant, vine length, leaf area index and biomass which was different among cultivars. The impact of drought stress on drought-tolerant cultivars was lower than that of drought-sensitive cultivars. Under drought stress, these were significant positive correlations of drought resistance with leaf number per plant, vine length, leaf area index and biomass of different cultivars. All the agronomic traits could be used as a comprehensive evaluation index for identifying drought resistance of sweetpotato cultivars. Xushu 18 could be used as a control cultivar in the identification and screening of drought tolerance.

Key words: sweetpotato, drought tolerant, comprehensive assessment, identified index

表1

试验材料名称、类型及选育单位"

品种类型
Cultivar type		 序号
No.		 品种名称
Cultivar name		 选育单位
Breeding organization
淀粉型 1 徐薯18 Xushu 18 江苏徐州甘薯研究中心 Xuzhou Sweetpotato Research Center
High-starch 2 济薯15 Jishu 15 山东省农业科学院作物研究所 Crop Research Institute of SAAS
3 济薯21 Jishu 21 山东省农业科学院作物研究所 Crop Research Institute of SAAS
4 济徐23 Jixu 23 山东省农业科学院作物研究所 Crop Research Institute of SAAS
5 济薯25 Jishu 25 山东省农业科学院作物研究所 Crop Research Institute of SAAS
鲜食型 6 北京553 Beijing 553 原华北农业科学研究所 North China Institute of Agricultural Sciences
Table-used 7 郑薯20 Zhengshu 20 河南省农业科学院粮食作物研究所 Crop Research Institute of HAAS
8 烟薯25 Yanshu 25 烟台市农业科学研究院 Yantai Academy of Agricultural Sciences
9 济薯22 Jishu 22 山东省农业科学院作物研究所 Crop Research Institute of SAAS
10 济薯26 Jishu 26 山东省农业科学院作物研究所 Crop Research Institute of SAAS
色素型 11 凌紫Ayamaraski 日本品种 Japanese Genotype
Rich in pigment 12 济薯18 Jishu 18 山东省农业科学院作物研究所 Crop Research Institute of SAAS
13 济紫薯1号 Jizishu 1 山东省农业科学院作物研究所 Crop Research Institute of SAAS
14 济紫薯2号 Jizishu 2 山东省农业科学院作物研究所 Crop Research Institute of SAAS
15 济紫薯3号 Jizishu 3 山东省农业科学院作物研究所 Crop Research Institute of SAAS

表2

甘薯品种抗旱性评价"

品种
Cultivar		 2012 2013 抗旱评价
DE
鲜薯产量
Fresh weight (kg hm-2)		 抗旱系数
DC		 鲜薯产量
Fresh weight (kg hm-2)		 抗旱系数
DC
对照Control 干旱Drought 对照
Control		 干旱
Drought
徐薯18 Xushu 18 18735 fg 10305 d 0.55 ef 20970 d 11955 d 0.57 e 中抗Medium resistance
济薯15 Jishu 15 20205 de 13530 c 0.67 bc 22740 c 14325 c 0.63 d 抗Resistance
济薯21 Jishu 21 19200 ef 13635 b 0.71 a 21525 d 15720 b 0.73 a 抗Resistance
济徐23 Jixu 23 22950 b 15840 a 0.69 ab 24540 b 15945 b 0.65 c 抗Resistance
济薯25 Jishu 25 25080 a 17550 a 0.70 a 27090 a 18420 a 0.68 b 抗Resistance
北京553 Beijing 553 16350 hi 9315 e 0.57 de 18570 e 9840 e 0.53 fg 中抗Medium resistance
郑薯20 Zhengshu 20 20250 cd 7890 f 0.39 h 23400 c 8430 f 0.36 h 不抗Not resistance
烟薯25 Yanshu 25 21600 c 14040 b 0.65 c 22920 c 14445 c 0.63 cd 抗Resistance
济薯22 Jishu 22 16875 h 6405 g 0.38 h 18525 e 6480 h 0.35 hi 不抗Not resistance
济薯26 Jishu 26 23520 b 13635 bc 0.58 d 26820 a 14490 c 0.54 ef 中抗Medium resistance
凌紫Ayamaraski 13140 k 4590 i 0.35 i 13530 h 4470 j 0.33 i 不抗Not resistance
济薯18 Jishu18 17550 g 8595 e 0.49 g 15600 g 7950 g 0.51 ef 中抗Medium resistance
济紫薯1号 Jizishu 1 15450 ij 5250 h 0.34 i 16845 f 5895 i 0.35 i 不抗Not resistance
济紫薯2号 Jizishu 2 14640 j 7470 f 0.51 f 16065 fg 8520 f 0.53 g 中抗Medium resistance
济紫薯3号 Jizishu 3 16200 hi 5985 gh 0.37 hi 16935 f 6435 h 0.38 h 不抗Not resistance

表3

干旱胁迫对甘薯单株叶片数的影响"

品种
Cultivar		 栽后60 d 60 DAP 栽后100 d 100 DAP
对照Control 干旱Drought 相对值RV 对照Control 干旱Drought 相对值RV
2012
徐薯18 Xushu 18 123 ab 59 b 0.48 bc 197 b 72 cd 0.37 b
济薯15 Jishu 15 121 b 62 a 0.51 bc 203 b 80 b 0.39 ab
济薯21 Jishu 21 110 d 57 b 0.52 b 185 c 75 c 0.41 a
济徐23 Jixu 23 118 bc 61 ab 0.52 b 194 b 76 c 0.39 ab
济薯25 Jishu 25 129 a 65 a 0.50 bc 213 a 85 a 0.40 a
北京553 Beijing 553 109 d 65 a 0.60 a 178 d 68 de 0.38 ab
郑薯20 Zhengshu 20 107 d 45 d 0.42 cd 168 e 56 f 0.33 c
烟薯25 Yanshu 25 127 a 58 b 0.46 bc 201 b 65 e 0.32 c
济薯22 Jishu 22 118 bc 59 b 0.50 bc 178 d 69 de 0.39 ab
济薯26 Jishu 26 128 a 60 b 0.47 bc 215 a 79 bc 0.37 b
凌紫Ayamaraski 98 e 39 e 0.40 d 199 b 49 g 0.25 d
济薯18 Jishu 18 114 c 51 c 0.45 c 187 c 63 e 0.34 c
济紫薯1号 Jizishu 1 125 ab 60 b 0.48 bc 200 b 70 d 0.35 bc
济紫薯2号 Jizishu 2 107 d 49 cd 0.46 bc 178 d 64 e 0.36 bc
济紫薯3号 Jizishu 3 112 cd 48 cd 0.43 cd 184 c 59 f 0.32 c
2013
徐薯18 Xushu 18 134 a 65 ab 0.49 ab 213 b 79 b 0.37 bc
济薯15 Jishu 15 110 d 51 c 0.46 bc 187 ef 62 e 0.33 d
济薯21 Jishu 21 128 b 70 a 0.55 a 209 bc 89 a 0.43 a
济徐23 Jixu 23 124 bc 65 ab 0.53 a 202 cd 80 b 0.40 ab
济薯25 Jishu 25 125 bc 63 b 0.50 ab 207 c 82 b 0.40 ab
北京553 Beijing 553 113 d 55 c 0.49 ab 182 f 68 d 0.37 bc
郑薯20 Zhengshu 20 126 b 63 b 0.50 ab 191 e 73 c 0.38 bc
烟薯25 Yanshu 25 131 ab 65 ab 0.50 ab 207 c 78 b 0.38 bc
济薯22 Jishu 22 135 a 69 a 0.51 ab 198 d 79 b 0.40 ab
济薯26 Jishu 26 121 c 53 c 0.44 c 208 c 72 c 0.35 cd
凌紫Ayamaraski 87 g 35 e 0.40 d 213 b 53 f 0.25 e
济薯18 Jishu 18 130 ab 63 b 0.48 bc 221 a 75 bc 0.34 cd
济紫薯1号 Jizishu 1 98 f 47 d 0.48 bc 156 g 55 f 0.35 cd
济紫薯2号 Jizishu 2 114 d 54 c 0.47 bc 189 e 69 d 0.37 bc
济紫薯3号 Jizishu 3 104 e 45 d 0.43 cd 171 55 f 0.32 d

表4

干旱胁迫对甘薯蔓长的影响"

品种
Cultivar		 栽后60 d 60 DAP 栽后100 d 100 DAP
对照Control 干旱Drought 相对值RV 对照Control 干旱Drought 相对值RV
2012
徐薯18 Xushu 18 105.64 c 69.56 cd 0.66 a 148.95 f 81.89 c 0.55 ab
济薯15 Jishu 15 91.75 d 59.45 g 0.65 ab 163.79 e 81.45 c 0.50 cd
济薯21 Jishu 21 119.34 b 78.13 b 0.65 ab 157.57 e 90.32 b 0.57 a
济徐23 Jixu 23 117.56 b 73.56 bc 0.63 b 164.32 e 92.31 b 0.56 ab
济薯25 Jishu 25 114.56 b 77.45 b 0.68 a 185.64 c 104.53 a 0.56 ab
北京553 Beijing 553 98.46 d 64.13 ef 0.65 ab 138.45 g 75.88 d 0.55 ab
郑薯20 Zhengshu 20 107.23 c 64.12 ef 0.60 cd 142.56 fg 74.79 d 0.52 bc
烟薯25 Yanshu 25 131.89 a 78.56 b 0.60 cd 201.76 b 91.86 b 0.46 de
济薯22 Jishu 22 108.76 c 67.26 de 0.62 cd 158.29 e 84.56 c 0.53 bc
济薯26 Jishu 26 134.56 a 84.56 a 0.63 b 213.22 a 101.23 a 0.47 d
凌紫 Ayamaraski 97.56 d 56.46 g 0.58 d 119.56 h 63.56 e 0.53 bc
济薯18 Jishu 18 105.46 c 61.23 fg 0.58 d 188.45 c 81.46 c 0.43 e
济紫薯1号 Jizishu 1 112.67 bc 66.76 de 0.59 d 165.45 e 86.35 bc 0.52 bc
济紫薯2号 Jizishu 2 106.87 c 63.58 ef 0.59 d 138.45 g 73.69 d 0.53 bc
济紫薯3号 Jizishu 3 112.46 bc 69.56 cd 0.62 cd 176.45 d 90.23 b 0.51 bc
2013
徐薯18 Xushu 18 91.81 e 57.18 cd 0.62 b 133.39 e 70.69 de 0.53 bc
济薯15 Jishu 15 88.08 ef 50.35 e 0.57 cd 147.64 c 68.59 de 0.46 e
济薯21 Jishu 21 94.97 de 63.48 bc 0.67 a 141.67 d 79.11 b 0.56 ab
济徐23 Jixu 23 103.26 bc 70.02 a 0.68 a 152.15 c 87.02 a 0.57 a
济薯25 Jishu 25 104.92 bc 60.04 bc 0.57 cd 148.91 c 78.24 b 0.53 bc
北京553 Beijing 553 109.98 b 65.71 ab 0.60 bc 158.61 b 78.75 b 0.50 cd
郑薯20 Zhengshu 20 83.34 f 48.12 f 0.58 bc 127.26 f 62.20 e 0.49 d
烟薯25 Yanshu 25 121.39 a 63.90 bc 0.53 d 184.09 a 78.59 b 0.43 f
济薯22 Jishu 22 94.81 de 54.97 de 0.58 bc 139.88 d 71.58 d 0.51 c
济薯26 Jishu 26 99.58 cd 59.58 cd 0.60 bc 135.09 e 74.58 cd 0.55 ab
凌紫 Ayamaraski 84.06 f 44.60 f 0.53 d 105.18 g 51.42 f 0.49 d
济薯18 Jishu 18 101.24 c 58.78 cd 0.58 bc 151.31 c 69.60 de 0.46 e
济紫薯1号 Jizishu 1 98.56 cd 52.57 e 0.53 d 149.23 c 73.30 cd 0.49 d
济紫薯2号 Jizishu 2 93.00 de 56.24 de 0.60 bc 127.55 f 65.94 e 0.52 bc
济紫薯3号 Jizishu 3 98.36 cd 61.02 bc 0.62 bc 159.79 b 77.02 bc 0.48 de

表5

干旱胁迫对甘薯叶面积系数的影响"

品种
Cultivar		 栽后60 d 60 DAP 栽后100 d 100 DAP
对照Control 干旱Drought 相对值RV 对照Control 干旱Drought 相对值RV
2012
徐薯18 Xushu 18 4.23 e 2.45 cd 0.58 de 4.03 e 2.07 d 0.51 bc
济薯15 Jishu 15 3.98 e 2.64 cd 0.66 b 3.96 e 2.14 cd 0.54 b
济薯21 Jishu 21 6.01 cd 4.34 ab 0.72 a 5.86 c 3.84 a 0.66 a
济徐23 Jixu 23 6.54 bc 3.98 b 0.61 bcd 6.31 b 3.57 a 0.57 b
济薯25 Jishu 25 6.78 bc 4.32 ab 0.64 bc 6.52 b 3.79 a 0.58 b
北京553 Beijing 553 3.65 ef 2.13 d 0.58 de 3.61 ef 1.82 de 0.50 bc
郑薯20 Zhengshu 20 3.78 ef 2.34 d 0.62 bcd 3.71 ef 1.41 ef 0.38 e
烟薯25 Yanshu 25 7.12 ab 4.72 a 0.66 b 6.89 b 3.62 a 0.53 b
济薯22 Jishu 22 4.03 e 2.45 cd 0.61 bcd 4.06 e 1.72 de 0.42 de
济薯26 Jishu 26 7.86 a 4.19 b 0.53 e 7.48 a 3.84 a 0.51 bc
凌紫 Ayamaraski 2.98 f 1.65 e 0.55 e 2.87 g 1.13 f 0.39 e
济薯18 Jishu 18 3.59 ef 2.11 d 0.59 cde 3.87 e 1.79 de 0.46 cd
济紫薯1号 Jizishu 1 7.21 ab 4.37 ab 0.61 bcd 6.76 b 2.67 b 0.40 de
济紫薯2号 Jizishu 2 3.45 f 2.14 d 0.62 bcd 3.33 f 1.69 de 0.51 bc
济紫薯3号 Jizishu 3 5.35 d 2.98 c 0.56 e 4.97 d 2.58 bc 0.52 b
2013
徐薯18 Xushu 18 3.61 c 1.93 cd 0.53 c 3.16 bc 1.49 de 0.47 c
济薯15 Jishu 15 3.96 c 2.28 c 0.57 bc 3.74 b 1.89 cd 0.51 bc
济薯21 Jishu 21 3.98 c 2.72 c 0.68 a 3.46 bc 2.23 c 0.64 a
济徐23 Jixu 23 6.20 b 4.34 a 0.70 a 5.97 a 3.71 a 0.62 a
济薯25 Jishu 25 6.45 b 4.29 a 0.67 a 6.19 a 3.86 a 0.62 a
北京553 Beijing 553 3.43 c 2.10 cd 0.61 b 3.39 bc 1.79 cd 0.53 b
郑薯20 Zhengshu 20 3.57 c 2.03 cd 0.57 bc 3.50 b 1.49 de 0.43 d
烟薯25 Yanshu 25 6.56 b 4.08 ab 0.62 b 6.02 a 3.08 b 0.51 bc
济薯22 Jishu 22 3.81 c 2.32 c 0.61 b 3.03 bc 1.29 e 0.43 d
济薯26 Jishu 26 7.58 a 4.42 a 0.58 bc 6.20 a 3.17 b 0.51 bc
凌紫 Ayamaraski 2.80 d 1.64 d 0.59 bc 2.09 d 1.06 e 0.51 bc
济薯18 Jishu 18 3.83 c 2.25 c 0.59 bc 3.11 bc 1.63 d 0.52 b
济紫薯1号 Jizishu 1 6.86 b 3.72 b 0.54 c 6.41 a 2.03 c 0.32 e
济紫薯2号 Jizishu 2 3.72 c 2.21 c 0.59 bc 3.10 bc 1.56 de 0.50 bc
济紫薯3号 Jizishu 3 3.45 c 2.09 cd 0.61 b 2.91 c 1.49 de 0.51 bc

表6

干旱胁迫对甘薯地上部生物量的影响"

品种
Cultivar		 栽后60 d 60 DAP 栽后100 d 100 DAP
对照Control 干旱Drought 相对值RV 对照Control 干旱Drought 相对值RV
2012
徐薯18 Xushu 18 59.24 c 35.48 c 0.60 ab 85.97 d 44.53 c 0.52 bcde
济薯15 Jishu 15 50.13 cd 30.83 cd 0.62 ab 82.17 d 42.25 cd 0.51 cdef
济薯21 Jishu 21 58.78 c 38.69 bc 0.66 a 85.24 d 48.52 bc 0.57 a
济徐23 Jixu 23 65.49 b 41.19 ab 0.63 a 93.53 c 51.61 ab 0.55 ab
济薯25 Jishu 25 72.43 a 44.31 ab 0.61 ab 99.89 b 53.97 a 0.54 abc
北京553 Beijing 553 47.63 de 26.65 de 0.56 cd 75.83 e 38.70 d 0.51 cdef
郑薯20 Zhengshu 20 42.22 e 23.17 e 0.55 cd 67.22 f 30.08 e 0.45 g
烟薯25 Yanshu 25 73.84 a 45.41 a 0.61 ab 107.65 a 54.49 a 0.51 cdef
济薯22 Jishu 22 45.47 e 24.26 e 0.53 d 72.39 e 32.85 e 0.45 g
济薯26 Jishu 26 65.32 b 40.48 ab 0.62 ab 91.68 c 49.27 b 0.54 abc
凌紫 Ayamaraski 31.99 f 18.50 f 0.58 bc 57.39 g 22.75 f 0.40 h
济薯18 Jishu 18 53.12 c 30.17 cd 0.57 bc 75.57 e 35.76 de 0.47 fg
济紫薯1号 Jizishu 1 65.33 b 38.80 bc 0.59 bc 83.80 d 40.99 cd 0.49 ef
济紫薯2号 Jizishu 2 45.69 e 27.33 de 0.60 ab 63.66 f 31.81 e 0.50 def
济紫薯3号 Jizishu 3 78.26 a 49.07 a 0.63 a 105.02 a 54.99 a 0.52 bcde
2013
徐薯18 Xushu 18 65.18 c 37.15 c 0.57 cdef 96.72 d 47.82 c 0.49 cde
济薯15 Jishu 15 55.61 de 32.84 d 0.59 bcd 93.43 de 46.32 c 0.50 bcde
济薯21 Jishu 21 66.10 c 44.61 b 0.67 a 94.42 de 55.13 b 0.58 a
济徐23 Jixu 23 67.93 c 41.93 bc 0.62 bc 97.94 d 53.08 b 0.54 b
济薯25 Jishu 25 80.99 a 48.65 a 0.60 bc 112.57 b 59.76 a 0.53 bc
北京553 Beijing 553 57.04 d 30.81 de 0.54 efg 92.29 de 45.88 c 0.50 bcde
郑薯20 Zhengshu 20 50.27 e 26.46 e 0.53 fg 81.52 f 35.09 d 0.43 g
烟薯25 Yanshu 25 82.62 a 49.92 a 0.60 bc 121.50 a 60.36 a 0.50 bcde
济薯22 Jishu 22 55.20 d 28.27 e 0.51 g 89.39 e 39.18 d 0.44 fg
济薯26 Jishu 26 74.08 b 45.02 ab 0.61 bc 104.93 c 55.31 b 0.53 bc
凌紫 Ayamaraski 41.09 f 22.60 f 0.55 efg 75.88 g 28.43 e 0.37 h
济薯18 Jishu 18 54.70 de 30.14 d 0.55 efg 78.72 fg 36.13 d 0.46 efg
济紫薯1号 Jizishu 1 74.10 b 43.06 b 0.58 cde 95.71 d 45.62 c 0.48 defg
济紫薯2号 Jizishu 2 64.23 c 37.24 c 0.58 cde 90.64 de 43.82 c 0.48 defg
济紫薯3号 Jizishu 3 81.60 a 45.36 ab 0.56 def 110.23 b 57.70 ab 0.52 bcd

表7

干旱胁迫对甘薯地下部生物量的影响"

品种
Cultivar		 栽后60 d 60 DAP 栽后100 d 100 DAP
对照Control 干旱Drought 相对值RV 对照Control 干旱Drought 相对值RV
2012
徐薯18 Xushu 18 5.60 de 3.08 d 0.55 de 24.03 cd 10.79 de 0.45 d
济薯15 Jishu 15 5.23 ef 2.74 de 0.52 ef 22.34 de 9.87 de 0.44 d
济薯21 Jishu 21 6.14 cd 3.98 bc 0.65 a 29.59 b 17.42 ab 0.59 a
济徐23 Jixu 23 7.45 b 4.54 b 0.61 abc 31.43 ab 17.49 ab 0.56 a
济薯25 Jishu 25 9.78 a 5.76 a 0.59 bcd 34.56 a 19.73 a 0.57 a
北京553 Beijing 553 6.25 c 3.58 cd 0.57 cd 29.76 b 15.43 bc 0.52 bc
郑薯20 Zhengshu 20 5.98 d 2.76 de 0.46 g 24.89 cd 9.67 de 0.39 e
烟薯25 Yanshu 25 6.56 c 3.87 c 0.59 bcd 29.78 b 16.45 abc 0.55 ab
济薯22 Jishu 22 7.00 b 4.31 b 0.62 ab 33.33 a 16.28 abc 0.49 c
济薯26 Jishu 26 9.56 a 5.43 a 0.57 cd 33.54 a 17.56 ab 0.52 bc
凌紫 Ayamaraski 4.37 f 2.10 e 0.48 fg 18.75 e 7.73 e 0.41 de
济薯18 Jishu 18 5.86 d 2.89 de 0.49 fg 25.02 cd 10.78 de 0.43 de
济紫薯1号 Jizishu 1 7.56 b 3.66 c 0.48 fg 28.67 bc 9.70 de 0.34 f
济紫薯2号 Jizishu 2 4.65 f 2.39 e 0.51 ef 19.88 e 8.73 e 0.44 d
济紫薯3号 Jizishu 3 6.08 cd 3.08 d 0.51 ef 29.09 b 13.21 cd 0.45 d
2013
徐薯18 Xushu 18 4.67 e 2.48 d 0.53 de 20.71 cd 9.19 cd 0.44 d
济薯15 Jishu 15 4.95 de 2.53 d 0.51 ef 21.54 cd 9.45 cd 0.44 d
济薯21 Jishu 21 4.64 e 3.06 c 0.66 a 29.41 ab 15.51 ab 0.53 abc
济徐23 Jixu 23 6.91 b 4.08 b 0.59 bc 30.17 a 16.65 ab 0.55 ab
济薯25 Jishu 25 9.07 a 5.17 a 0.57 bcd 33.11 a 18.72 a 0.57 a
北京553 Beijing 553 4.99 de 2.93 cd 0.59 bc 23.09 c 12.06 bc 0.52 bc
郑薯20 Zhengshu 20 5.58 cd 2.45 d 0.44 g 23.92 c 9.16 cd 0.38 e
烟薯25 Yanshu 25 5.46 cd 3.12 c 0.57 bcd 25.67 bc 14.07 abc 0.55 ab
济薯22 Jishu 22 6.11 bc 3.72 b 0.61 b 29.55 ab 14.37 abc 0.49 c
济薯26 Jishu 26 9.24 a 5.19 a 0.56 cd 32.74 a 17.08 a 0.52 a
凌紫 Ayamaraski 3.43 f 1.60 e 0.47 fg 15.08 e 6.16 d 0.41 d
济薯18 Jishu 18 4.18 e 1.89 e 0.45 g 18.93 de 7.97 d 0.42 d
济紫薯1号 Jizishu 1 6.08 bc 2.71 d 0.45 g 28.67 ab 10.45 cd 0.36 e
济紫薯2号 Jizishu 2 3.75 f 1.77 e 0.47 fg 16.99 e 7.29 d 0.43 d
济紫薯3号 Jizishu 3 4.50 e 2.20 de 0.49 ef 22.22 cd 9.99 cd 0.45 cd

表8

农艺性状与抗旱系数的相关系数(正常灌水条件下) "

年份Year 生育期
Growth stage		 叶片数
Leaf number		 蔓长
Vine length		 叶面积系数
Leaf area index		 生物量 Biomass
地上部 Aboveground 地下部 Underground
2012 40 DAP 0.13 0.46 0.39 0.28 0.30
60 DAP 0.41 0.29 0.38 0.36 0.30
80 DAP 0.48 0.35 0.35 0.49 0.46
100 DAP 0.40 0.35 0.41 0.47 0.31
2013 40 DAP 0.43 0.42 0.28 0.15 0.30
60 DAP 0.45 0.43 0.36 0.21 0.35
80 DAP 0.38 0.46 0.35 0.31 0.50
100 DAP 0.40 0.39 0.41 0.27 0.39

表9

农艺性状与抗旱系数的相关系数(干旱胁迫条件下) "

年份Year 生育期
Growth stage		 叶片数
Leaf number		 蔓长
Vine length		 叶面积系数
Leaf area index		 生物量 Biomass
地上部 Aboveground 地下部 Underground
2012 40 DAP 0.61* 0.59* 0.53* 0.37 0.50
60 DAP 0.62* 0.53* 0.49 0.42 0.48
80 DAP 0.69** 0.65** 0.52* 0.60* 0.63*
100 DAP 0.73** 0.52* 0.67** 0.60* 0.61*
2013 40 DAP 0.56* 0.61* 0.56* 0.46 0.42
60 DAP 0.50 0.61* 0.49 0.51 0.50
80 DAP 0.59* 0.59* 0.53* 0.64* 0.65**
100 DAP 0.65** 0.60* 0.71** 0.63* 0.61*
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