不同抗旱性甘薯品种叶片生理性状差异及抗旱指标筛选

doi:10.3724/SP.J.1006.2022.14031

Abstract

Abstract:

Field experiments were conducted under a rain proof shelter using 15 sweetpotato cultivars with well-watered and drought stress treatments. Leaf physiological characteristics of different sweetpotato cultivars under drought stress were studied. The results showed that the leaf area index of all varieties decreased in different degrees under drought stress, which evaluating the difference of drought tolerance in varieties. Cluster analysis of drought resistance coefficient revealed that 15 sweetpotato cultivars were classified into three drought resistant types. The drought-tolerant cultivars were Jishu 21, Jishu 25, Jixu 23, Jishu 15, and Yanshu 25. The moderate drought-tolerant cultivars were Xushu 18, Jishu 26, Beijing 553, Jizishu 2, and Jishu 18. The drought-sensitive cultivars were Zhengshu 20, Jizishu 3, Jishu 22, Jizishu 1, and Ayamaraski. The correlation analysis between leaf area index and drought resistance coefficient demonstrated that the drought-tolerant cultivars could maintain higher leaf area index under drought stress, while the leaf area index under well-watered could not reflect the drought resistance. Drought stress resulted in the decline of chlorophyll content, the relative water content of functional leaves, and the increase of relative electrical conductivity of functional leaves. Under drought stress, the chlorophyll content and relative water content of functional leaves were significantly positively correlated with drought resistance in different cultivars, while the relative electrical conductivity of functional leaves was significantly negatively correlated with the drought resistance of sweetpotato varieties. In summary, leaf area index, chlorophyll content, relative water content, and relative electrical conductivity of functional leaves could be used as comprehensive evaluation indexes for identifying drought resistance of sweetpotato cultivars.

Key words: sweetpotato, drought resistant, physiological characteristics, drought-tolerant indicators

ZHANG Hai-Yan, XIE Bei-Tao, JIANG Chang-Song, FENG Xiang-Yang, ZHANG Qiao, DONG Shun-Xu, WANG Bao-Qing, ZHANG Li-Ming, QIN Zhen, DUAN Wen-Xue. Screening of leaf physiological characteristics and drought-tolerant indexes of sweetpotato cultivars with drought resistance[J].Acta Agronomica Sinica, 2022, 48(2): 518-528.

Figures/Tables 11

Table 1

Table 2

Table 3

Table 4

Effects of drought stress on relative water content of functional leaves in sweetpotato (%)"

年份 Year	品种 Cultivar	栽后60 d 60 DAP
年份 Year	品种 Cultivar	对照 Control	干旱 Drought	相对值 RV	对照 Control	干旱 Drought	相对值 RV
2012	济徐23 Jixu 23	86.66 b	69.84 a	0.81 a	82.01 bcd	55.40 b	0.68 abc
	郑薯20 Zhengshu 20	83.14 ef	64.23 bc	0.77 b	79.72 ef	48.33 de	0.61 def
	济薯15 Jishu 15	83.72 de	62.58 bc	0.75 b	79.87 ef	51.98 cd	0.65 bcd
	济薯21 Jishu 21	84.19 cde	62.52 bc	0.74 bc	80.76 cde	55.75 b	0.69 abc
	济薯25 Jishu 25	89.22 a	65.50 ab	0.73 b	84.50 a	59.85 a	0.71 a
	济紫薯2号 Jizishu 2	81.20 fg	59.56 bcd	0.73 bcd	78.40 f	50.38 cd	0.64 cd
	济薯26 Jishu 26	89.20 a	62.35 bc	0.70 cde	81.69 bcd	53.14 bc	0.65 bcd
	烟薯25 Yanshu 25	85.25 bcd	58.94 cde	0.69 def	82.66 abc	45.95 ef	0.56 fgh
	徐薯18 Xushu 18	82.40 ef	54.57 ef	0.66 efg	79.17 ef	48.33 de	0.61 def
	济紫薯3号 Jizishu 3	85.94 bc	56.95 de	0.66 efg	80.61 de	49.52 cd	0.61 def
	北京553 Beijing 553	80.36 g	52.53 f	0.65 fg	78.33 f	48.94 de	0.62 de
	济薯18 Jishu 18	78.33 h	50.78 f	0.65 fg	74.57 g	43.02 f	0.58 efg
	济薯22 Jishu 22	80.77 g	51.26 f	0.63 gh	80.10 ef	51.55 cd	0.64 cd
	济紫薯1号 Jizishu 1	87.01 b	54.95 def	0.63 gh	83.46 ab	43.45 f	0.52 h
	凌紫Ayamaraski	85.86 bc	50.66 f	0.59 h	80.92 cde	44.83 ef	0.55 gh
	济徐23 Jixu 23	85.57 bc	66.39 abc	0.78 a	81.13 ab	54.02 c	0.67 b
	烟薯25 Yanshu 25	86.56 ab	66.98 ab	0.77 a	73.56 f	44.98 e	0.61 de
2013	济薯26 Jishu 26	88.52 a	68.54 a	0.77 a	80.68 bc	53.40 c	0.66 bc
	济薯18 Jishu 18	87.38 a	67.23 ab	0.77 a	82.69 a	51.21 d	0.62 cd
	济薯22 Jishu 22	79.68 e	60.26 d	0.76 a	75.14 e	45.51 e	0.61 de
	济薯21 Jishu 21	85.91 bc	65.17 bc	0.76 a	81.62 ab	58.54 a	0.72 a
	济薯25 Jishu 25	87.19 a	64.50 c	0.74 a	83.02 a	56.50 b	0.68 ab
	济薯15 Jishu 15	79.18 e	52.76 f	0.67 b	73.72 f	45.80 e	0.62 cd
	济紫薯3号 Jizishu 3	84.43 c	55.54 e	0.66 b	79.69 c	45.55 e	0.57 ef
	徐薯18 Xushu 18	83.99 c	55.72 e	0.66 b	80.68 bc	49.57 d	0.61 de
	济紫薯2号 Jizishu 2	74.23 f	48.58 g	0.65 b	71.40 g	39.76 f	0.56 fg
	郑薯20 Zhengshu 20	81.35 d	52.34 f	0.64 bc	77.18 d	44.45 e	0.58 def
	北京553 Beijing 553	79.64 e	51.29 f	0.64 bc	72.33 fg	37.39 g	0.52 gh
	济紫薯1号 Jizishu 1	77.57 e	46.49 gh	0.60 cd	73.89 f	40.04 f	0.54 fg
	凌紫 Ayamaraski	81.57 d	45.60 h	0.56 d	74.92 ef	35.89 h	0.48 h

Table 4

Table 5

Effects of drought stress on relative electrical conductivity of functional leaves in sweetpotato (%)"

年份 Year	品种 Cultivar	栽后60 d 60 DAP			栽后100 d 100 DAP
年份 Year	品种 Cultivar	对照 Control	干旱 Drought	相对值 RV	对照 Control	干旱 Drought	相对值 RV
2012	济薯21 Jishu 21	22.85 c	35.69 f	1.56 g	22.48 c	49.80 h	2.22 ij
	济薯25 Jishu 25	23.76 abc	37.56 d	1.58 fg	22.91 bc	51.76 g	2.26 ghi
	济紫薯2号 Jizishu 2	22.89 cd	36.45 ef	1.59 fg	22.98 bc	50.89 g	2.21 j
	济薯15 Jishu 15	24.67 a	39.78 c	1.61 fg	23.98 a	54.89 f	2.29 g
	济紫薯3号 Jizishu 3	22.46 de	36.78 de	1.64 efg	22.78 bc	50.79 g	2.23 hij
	烟薯25 Yanshu 25	22.48 de	36.78 de	1.64 efg	22.15 c	50.41 h	2.28 g
	济徐23 Jixu 23	21.78 ef	36.59 def	1.68 def	21.45 d	48.73 i	2.27 gh
	北京553 Beijing 553	21.32 f	36.45 ef	1.71 cde	20.67 e	49.29 hi	2.38 f
	郑薯20 Zhengshu 20	23.47 bc	41.12 c	1.75 bcd	23.08 abc	56.15 e	2.43 e
	济紫薯1号 Jizishu 1	24.23 ab	43.04 b	1.78 abc	23.33 abc	60.15 ab	2.58 b
	济薯26 Jishu 26	24.31 ab	43.18 b	1.78 abc	23.99 a	58.87 cd	2.45 de
	徐薯18 Xushu 18	23.89 ab	42.76 b	1.79 abc	23.57 ab	58.45 d	2.48 d
	凌紫 Ayamaraski	23.65 bc	43.46 b	1.84 ab	22.93 bc	60.57 a	2.64 a
	济薯22 Jishu 22	23.31 bcd	42.87 b	1.84 ab	23.40 ac	58.31 d	2.49 cd
	济薯18 Jishu 18	23.89 ab	44.54 a	1.86 a	23.50 ab	59.57 bc	2.53 c
	济薯15 Jishu 15	26.12 a	41.23 c	1.58 f	25.43 a	56.34 e	2.22 c
	济薯21 Jishu 21	21.35 e	34.34 f	1.61 f	21.33 e	48.45 h	2.27 c
	济紫薯2号 Jizishu 2	22.35 cd	35.91 e	1.61 f	22.44 d	50.35 fg	2.24 c
	烟薯25 Yanshu 25	23.21 c	37.51 d	1.62 f	22.88 cd	51.14 f	2.24 c
2013	济薯25 Jishu 25	21.81 de	35.61 e	1.63 ef	20.96 ef	49.81 g	2.38 b
	济紫薯3号 Jizishu 3	21.68 de	36.00 de	1.66 def	22.00 de	50.01 g	2.27 c
	郑薯20 Zhengshu 20	24.60 b	42.25 b	1.72 cde	24.21 b	57.28 de	2.37 b
	北京553 Beijing 553	20.78 e	35.91 e	1.73 cd	20.13 fg	48.75 h	2.42 b
	济徐23 Jixu 23	19.75 f	34.56 f	1.75 bcd	19.42 g	46.70 i	2.40 b
	徐薯18 Xushu 18	25.12 b	43.99 a	1.75 bcd	24.80 ab	59.68 b	2.41 b
	济薯26 Jishu 26	24.89 b	43.76 a	1.76 bc	24.57 ab	59.45 bc	2.42 b
	凌紫 Ayamaraski	24.54 b	44.35 a	1.81 abc	23.82 bc	61.46 a	2.58 a
	济紫薯1号 Jizishu 1	22.78 cd	41.69 bc	1.83 ab	22.31 de	58.80 bc	2.64 a
	济薯22 Jishu 22	22.38 cd	41.94 bc	1.87 a	22.47 d	57.38 d	2.55 a
	济薯18 Jishu 18	22.92 c	43.57 a	1.90 a	22.53 d	58.60 c	2.60 a

Table 5

Table 6

Fig. 1

Fig. 2

Fig. 3

Fig. 4

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

品种 Cultivar	抗旱系数DC		叶面积系数 LAI
	2012	2013	2012		2013
	2012	2013	对照Control	干旱Drought	对照Control	干旱Drought
济薯21 Jishu 21	0.71 a	0.73 a	3.67 d	2.54 cd	3.46 h	2.23 de
济薯25 Jishu 25	0.70 a	0.68 b	6.52 b	3.89 ab	6.19 cd	3.56 b
济徐23 Jixu 23	0.69 ab	0.65 c	6.31 bc	3.57 b	5.97 d	3.94 a
济薯15 Jishu 15	0.67 bc	0.63 d	3.96 d	2.35 cde	3.74 fg	2.03 ef
烟薯25 Yanshu 25	0.65 c	0.63 cd	6.89 ab	4.24 a	6.52 b	3.88 a
徐薯18 Xushu 18	0.55 ef	0.57 e	5.73 c	2.87 c	5.42 e	2.55 c
济薯26 Jishu 26	0.58 d	0.54 ef	7.28 a	3.64 b	7.20 a	3.37 b
北京553 Beijing 553	0.57 de	0.53 fg	3.61 d	1.82 defg	3.39 h	1.79 g
济紫薯2号Jizishu 2	0.51 f	0.53 g	3.33 de	1.69 fgh	3.10 i	1.56 h
济薯18 Jishu 18	0.49 g	0.51 ef	3.47 de	1.69 fgh	3.11 i	1.63 gh
郑薯20 Zhengshu 20	0.39 h	0.36 h	3.71 d	1.41 gh	3.50 gh	1.19 i
济紫薯3号 Jizishu 3	0.37 hi	0.38 h	6.91 ab	2.72 c	6.58 bc	2.19 d
济薯22 Jishu 22	0.38 h	0.35 hi	4.06 d	1.72 efgh	3.83 f	1.59 h
济紫薯1号 Jizishu 1	0.34 i	0.35 i	6.76 ab	2.27 cdef	6.41 bc	2.03 f
凌紫 Ayamaraski	0.35 i	0.33 i	2.87 e	1.13 h	2.69 j	1.01 j
相关系数 Correlation coefficient	—	—	0.17	0.65^*	0.17	0.68^**

年份 Year	品种 Cultivar	栽后60 d 60 DAP			栽后100 d 100 DAP
年份 Year	品种 Cultivar	对照 Control	干旱 Drought	相对值 RV	对照 Control	干旱 Drought	相对值 RV
2012	济薯21 Jishu 21	2.84 ab	2.16 a	0.76 a	1.65 c	1.11 a	0.67 a
	济徐23 Jixu 23	2.90 a	2.18 a	0.75 a	1.72 bc	1.09 a	0.63 ab
	济薯25 Jishu 25	2.68 b	1.84 b	0.68 ab	1.68 c	1.02 a	0.61 bc
	凌紫Ayamaraski	2.71 ab	1.75 b	0.65 b	1.75 bc	0.78 c	0.45 ij
	济薯15 Jishu 15	2.20 c	1.38 d	0.63 bc	1.49 d	0.88 b	0.59 bc
	北京553 Beijing 553	2.59 bc	1.64 bc	0.63 bc	1.85 b	1.05 a	0.57 cd
	济紫薯1号 Jizishu 1	2.01 c	1.23 e	0.61 bc	1.23 e	0.67 d	0.54 def
	郑薯20 Zhengshu 20	2.03 c	1.24 e	0.61 bc	1.67 c	0.85 b	0.51 ef
	济薯26 Jishu 26	2.89 a	1.73 b	0.60 bc	1.96 ab	1.02 a	0.52 efgh
	济紫薯3号 Jizishu 3	2.65 b	1.55 c	0.58 cd	1.97 ab	1.09 a	0.55 cde
	徐薯18 Xushu 18	2.83 ab	1.64 bc	0.58 cd	2.25 a	1.12 a	0.50 fgh
	烟薯25 Yanshu 25	2.60 b	1.51 c	0.58 cd	2.24 a	1.07 a	0.48 hi
	济薯18 Jishu 18	2.19 c	1.18 e	0.54 d	1.79 bc	0.88 b	0.49 gi
	济薯22 Jishu 22	2.54 b	1.37 d	0.54 d	1.82 b	0.87 b	0.48 hi
	济紫薯2号 Jizishu 2	2.82 ab	1.54 c	0.54 d	1.80 b	0.78 c	0.43 j

年份 Year	品种 Cultivar	栽后60 d 60 DAP			栽后100 d 100 DAP
年份 Year	品种 Cultivar	对照 Control	干旱 Drought	相对值 RV	对照 Control	干旱 Drought	相对值 RV
2013	济薯21 Jishu 21	2.45 bc	1.77 a	0.72 a	1.55 cde	1.03 a	0.67 a
	济薯25 Jishu 25	2.29 bc	1.56 c	0.68 ab	1.58 cd	1.03 a	0.65 ab
	济徐23 Jixu 23	2.51 ab	1.69 b	0.67 bc	1.62 cd	0.99 a	0.61 b
	烟薯25 Yanshu 25	2.21 bc	1.45 d	0.66 bc	1.94 ab	1.05 a	0.54 cd
	济薯18 Jishu 18	1.96 cd	1.23 f	0.63 cd	1.23 fg	0.69 b	0.56 c
	济紫薯1号 Jizishu 1	2.98 a	1.76 a	0.59 de	0.96 hij	0.49 c	0.51 def
	济紫薯2号 Jizishu 2	2.29 bc	1.34 e	0.58 e	0.83 j	0.45 c	0.54 cd
	济紫薯3号 Jizishu 3	2.12 bcd	1.22 f	0.58 e	1.74 bc	0.92 a	0.53 cde
	济薯22 Jishu 22	1.67 d	0.97 g	0.58 e	0.89 ij	0.47 c	0.53 cde
	济薯15 Jishu 15	2.21 bc	1.29 f	0.58 e	1.19 fgh	0.58 bc	0.49 efg
	北京553 Beijing 553	2.20 bcd	1.25 f	0.57 e	1.49 de	0.69 b	0.46 gh
	济薯26 Jishu 26	2.46 bc	1.38 e	0.56 ef	1.99 a	0.95 a	0.48 fg
	凌紫Ayamaraski	2.18 bcd	1.22 f	0.56 ef	1.05 ghi	0.48 c	0.46 gh
	郑薯20 Zhengshu 20	2.42 bc	1.27 f	0.52 f	1.37 ef	0.58 bc	0.42 h
	徐薯18 Xushu 18	2.44 bc	1.25 f	0.51 f	2.15 a	1.02 a	0.48 fg

年份Year	生育期 Growth stage	功能叶叶绿素含量 Chlorophyll content of functional leaves		功能叶相对含水量 Relative water content of functional leaves		功能叶相对电导率 Relative electrical conductivity of functional leaves
年份Year	生育期 Growth stage	对照Control	干旱Drought	对照Control	干旱Drought	对照Control	干旱Drought
2012	40 DAP	0.45	0.61^*	0.27	0.58^*	-0.15	-0.52^*
	60 DAP	0.42	0.61^*	0.20	0.62^*	-0.17	-0.55^*
	80 DAP	0.41	0.58^*	0.05	0.73^**	-0.29	-0.63^*
	100 DAP	0.15	0.62^*	0.19	0.65^**	-0.26	-0.59^*
2013	40 DAP	0.30	0.52^*	0.41	0.62^*	-0.18	-0.47
	60 DAP	0.10	0.47	0.43	0.60^*	-0.19	-0.51
	80 DAP	0.49	0.72^**	0.37	0.63^*	-0.25	-0.59^*
	100 DAP	0.46	0.66^**	0.31	0.64^*	-0.24	-0.56^*

Screening of leaf physiological characteristics and drought-tolerant indexes of sweetpotato cultivars with drought resistance

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