干旱胁迫下冬小麦不同品种萌发特性差异的研究

doi:10.3724/SP.J.1006.2024.31037

Abstract

Abstract:

Drought is an important stress affecting wheat production, which can reduce the quality of germination and seedling establishment. In order to understand the seed germination characteristics of wheat cultivars under drought stress, the germination characteristics under drought stress of 128 wheat cultivars widely used in production were identified by sand cultivation and water control method. Six wheat cultivars with significant differences in germination characteristics under drought stress ((Shannong 28 (SN28), Chang 6878 (C6878), Yannong 19 (YN19), Shannong 23 (SN23), Xinmai 296 (XM296), and Xinmai 38 (XM38)) were selected for physiological and biochemical analysis during seed germination under drought stress. The results showed that the germination characteristics under drought stress of 128 wheat cultivars were divided into 5 categories according to the drought tolerance coefficient of vigor index: good, the better, medium, the worse, and the worst. Eighteen wheat cultivars with good germination characteristics under drought stress, including SN28 and C6878, had fast seed germination and healthy seedlings. Twenty-six wheat cultivars with poor germination characteristics under drought stress, such as XM38 and Lemai 185, had slow seed germination, dispersed germination time, low germination percentage (GP), and poor seedling uniformity. The physiological and biochemical indices of wheat cultivars with different germination characteristics under drought stress were further determined. The results showed that the relative expression level of TDP1 gene at the early stage of germination under drought in SN28 and C6878 with good germination characteristics under drought stress was significantly higher than the control. POD activity at the early stage of germination under drought was significantly higher than the control. The activities of α-amylase and cysteine protease were less affected by drought, and the soluble protein content at the late stage of germination was significantly higher than the control. However, the relative expression levels of DNA and protein repair genes in seed embryos of XM296 and XM38 with poor germination characteristics under drought stress were relatively delayed under drought stress. The activity of cysteine protease decreased significantly under drought stress. The above results indicated that wheat cultivars with good germination characteristics under drought stress showed strong macromolecular repair ability in seed embryos and antioxidant capacity in seed, early mobilization of storage substances during seed germination and seedling establishment under drought stress, and finally had fast germination speed and high seedling quality.

Key words: wheat (Triticum aestivum L.), drought stress, seed germination characteristics, decomposition and transformation of storage substances, macromolecular repair ability, antioxidant capacity

QIAO Zhi-Xin, ZHANG Jie-Dao, WANG Yu, GUO Qi-Fang, LIU Yan-Jing, CHEN Rui, HU Wen-Hao, SUN Ai-Qing. Difference in germination characteristics of different winter wheat cultivars under drought stress[J].Acta Agronomica Sinica, 2024, 50(6): 1568-1583.

Figures/Tables 15

Table 1

Table 2

Table S1

Comparison of germination and seedling growth indices of different wheat cultivars under normal conditions"

指标 Index	类别 Category	品种数量 Number of cultivars	品种名称 Cultivar name	指标范围 Index range
发芽势 GE (%)	显著高 SH	8	Sunstate, 运旱2129 Yunhan 2129, 济南8号 Jinan 8, 烟农19 YN19, 新麦26 Xinmai 26, 京冬8号 Jingdong 8, 济麦44 Jimai 44, 新麦21 Xinmai 21	>99%
发芽势 GE (%)	显著低 SL	4	沧麦119 Cangmai 119, 鑫麦296 XM296, 洛旱13 Luohan 13, 邯9204 Han 9204	<90%
发芽率 GP (%)	显著高 SH	4	淮麦608 Huaimai 608, 潍麦8号 Weimai 8, 鑫289 Xin 289, 衡H165171 Heng H165171	100%
发芽率 GP (%)	显著低 SL	1	洛旱13 Luohan 13	<95%
发芽指数 GI	显著高 SH	6	济南8号 Jinan 8, 烟农19 Yannong 19, 藁城8901 Gaocheng 8901, 晋麦30 Jinmai 30, 淮麦608 Huaimai 608, 中麦175 Zhongmai 175	>32
发芽指数 GI	显著低 SL	3	鲁麦21 Lumai 21, 鲁麦1号 Lumai 1, 鑫麦296 XM296	<25
活力指数 VI	显著高 SH	4	淮麦608 Huaimai 608, Karl92, 豫麦35 Yumai 35, 京冬6号 Jingdong 6	>0.7
活力指数 VI	显著低 SL	3	鑫麦296 XM296, 中麦578 Zhongmai 578, 鲁麦1号 Lumai 1	<0.4
单株干重 SSDW (g)	显著高 SH	10	淮麦608 Huaimai 608, 豫麦35 Yumai 35, Karl92, 矮抗58 Aikang 58, 百农4199 Bainong 4199, 冀麦825 Jimai 825, 鲁麦14号 Lumai 14, 豫农949 Yunong 949, 瑞华1568 Ruihua 1568, 京冬6号 Jingdong 6	>22
单株干重 SSDW (g)	显著低 SL	6	济宁16 Jining 16, 鑫麦296 XM296, 师栾02-1 Shiluan 02-1, TAM107, 鲁麦1号 Lumai 1, 青麦6号 Qingmai 6	<16
根长 RL (cm)	显著高 SH	11	矮抗58 Aikang 58, 冀中麦6号 Jizhongmai 6, 藁城8901 Gaocheng 8901, TKM6007, Y4188, 唐麦8号 Tangmai 8, 山农22 Shannong 22, 良星77 Liangxing 77, 冠麦9号 Guanmai 9, 藁优5218 Gaoyou 5218, 衡H165171 Heng H165171	>16
根长 RL (cm)	显著低 SL	4	沧麦119 Cangmai 119, 长6359 Chang 6359, 鲁麦23号 Lumai 23, 山农18 Shannong 18	<5
苗长 SL (cm)	显著高 SH	7	核生2号Hesheng 2, 济南8号Jinan 8, 晋麦30 Jinmai 30, 运旱2129 Yunhan 2129, 京冬6号Jingdong 6, 潍麦8号 Weimai 8, 跃进5号Yuejin 5	>15
苗长 SL (cm)	显著低 SL	11	石家庄8号Shijiazhuang 8, 新麦26 Xinmai 26, 众信8412 Zhongxin 8412, 河农6133 Henong 6133, 鲁麦21 Lumai 21, 兰德50856 Lande 50856, 洛麦23 Luomai 23, 师栾08-2 Shiluan 08-2, 潍9903 Wei 9903, 汶农17 Wennong 17, 石新828 Shixin 828	<11
根冠比 R/S	显著高 SH	5	冀5265 Ji 5265, 中植麦13 Zhongzhimai 13, 藁城8901 Gaocheng 8901, 豫麦35 Yumai 35, 烟农19 Yannong 19	>1.1
根冠比 R/S	显著低 SL	9	晋麦30 Jinmai 30, 优麦3号 Youmai 3, 山农28 SN28, 沧麦119 Cangmai 119, 烟农15 Yannong 15, 长6359 Chang 6359, 运旱2129 Yunhan 2129, 山农18 Shannong 18, 鲁麦23号Lumai 23	<0.6

Table S1

Table S2

Comparison of germination and seedling growth indices of different wheat cultivars under drought stress"

指标 Index	类别 Category	品种数量 Number of cultivars	品种名称 Cultivar name	指标范围 Index range
发芽势 GE (%)	显著高 SH	5	烟农836 Yannong 836, 晋麦30 Jinmai 30, Sunstate, 济南8号 Jinan 8, 石麦21 Shimai 21	>99
发芽势 GE (%)	显著低 SL	7	鑫麦296 XM296, 山农20 Shannong 20, 邯9204 Han 9204, 15P410, 洛旱13 Luohan 13, 新麦38 XM38, 兰德50856 Lande 50856	<80
发芽率 GP (%)	显著高 SH	5	京9428 Jing 9428, 豫麦49-198 Yumai 49-198, TAM107, 淄麦12 Zimai 12, 衡15-4229 Heng 15-4229	100
发芽率 GP (%)	显著低 SL	4	洛旱13 Luohan 13, 鑫麦296 XM296, 沧麦119 Cangmai 119, 新麦38 XM38	<95
发芽指数 GI	显著高 SH	6	济南8号 Jinan 8, 山农26 Shannong 26, 青麦6号 Qingmai 6, 核生2号 Hesheng 2, 藁城8901 Gaocheng 8901, 晋麦30 Jinmai 30	>28
发芽指数 GI	显著低 SL	3	鑫麦296 XM296, 洛旱13 Luohan 13, 新麦38 XM38	<23
活力指数 VI	显著高 SH	8	百农4199 Bainong 4199, 核生2号 Hesheng 2, 淮麦608 Huaimai 608, 烟农19 YN19, 运旱2129 Yunhan 2129, 长6359 Chang 6359, 京冬6号 Jingdong 6, Karl92	>0.5
活力指数 VI	显著低 SL	2	鑫麦296 XM296, 乐麦185 Lemai 185	<0.3
单株干重 SSDW (g)	显著高 SH	6	百农4199 Bainong 4199, 核生2号 Hesheng 2, 烟农19 YN19, 运旱2129 Yunhan 2129, 长6359 Chang 6359, 淮麦608 Huaimai 608	>20
单株干重 SSDW (g)	显著低 SL	3	鑫麦296 XM296, 青麦6号 Qingmai 6, 乐麦185 Lemai 185	<13
根长 RL (cm)	显著高 SH	3	洛麦23 Luomai 23, 烟农836 Yannong 836, 矮抗58 Aikang 58	>12
根长 RL (cm)	显著低 SL	6	豫麦35 Yumai 35, 核生2号 Hesheng 2, 潍9903 Wei 9903, 冀麦u87 Jimai u87, 青麦6号 Qingmai 6, 京冬8号 Jingdong 8	<9
苗长 SL (cm)	显著高 SH	7	核生2号 Hesheng 2, 运旱2129 Yunhan 2129, 鲁麦23号Lumai 23, 济南8号 Jinan 8, 沧麦119 Cangmai 119, 跃进5号 Yuejin 5, 长6878 C6878	>12.0
苗长 SL (cm)	显著低 SL	17	中麦175 Zhongmai 175, 冠麦9号 Guanmai 9, 豫教5号 Yujiao 5, 河农6133 Henong 6133, 藁优5218 Gaoyou 5218, 鑫麦296 XM296, 汶农17 Wennong 17, 潍9903 Wei 9903, 印度圆粒 Yinduyuanli, 邯9587 Han 9587, 师栾08-2 Shiluan 08-2, 兰德50856 Lande 50856, 冀麦u87 Jimai u87, 郑麦16 Zhengmai 16, 百农4199 Bainong 4199, 众信5199 Zhongxin 5199, 瑞华1568 Ruihua 1568	<8.8
根冠比 R/S	显著高 SH	6	烟农19 YN19, 农大981 Nongda 981, 中植麦13 Zhongzhimai 13, 郑麦20 Zhengmai 20, 冀5265 Ji 5265, 藁城8901 Gaocheng 8901	>1.5
根冠比 R/S	显著低 SL	6	青麦6号 Qingmai 6, 晋麦30 Jinmai 30, 百农4199 Bainong 4199, 中麦578 Zhongmai 578, 乐麦185 Lemai 185, 烟农15 Yannong 15	<1.0

Table S2

Table S3

Wheat cultivars with small decrease amplitude in germination and growth indices under drought stress"

指标 Index	降幅 Decrease amplitude	品种数量 Number of cultivars	品种名称 Cultivar name
发芽势 GE (%)	无影响 No effect	21	衡15-422 Heng 15-422, Y4188, 晋麦30 Jinmai 30, 核生2号 Hesheng 2, 中麦175 Zhongmai 175, 鲁原502 Luyuan 502, 淄麦12 Zimai 12, 冀5265 Ji 5265, 沧麦119 Cangmai 119, 博单30 Bodan 30, 青麦6号 Qingmai 6, 豫麦8679 Yumai 8679, 汶航1号 Wenhang 1, 鲁麦21 Lumai 21, 长6878 C6878, 石麦21 Shimai 21, 烟农836 Yannong 836, 跃进5号 Yuejin 5, 唐麦8号 Tangmai 8, 淮麦608 Huaimai 608, 瑞泉麦32 Ruiquanmai 32
发芽指数 GI	<5%	10	山农26 Shannong 26, 鲁麦21 Lumai 21, 鲁麦1号 Lumai 1, 郑育麦9987 Zhengyumai 9987, 烟农15 Yannong 15, 石家庄8号 Shijiazhuang 8, 泰山24 Taishan 24, 济南8号 Jinan 8, 济麦23 Jimai 23, 豫麦49-198 Yumai 49-198
活力指数 VI	<10%	10	中麦578 Zhongmai 578, 山农28 Shannong 28, 长6359 Chang 6359, 百农4199 Bainong 4199, 长6878 C6878, 烟农15 Yannong 15, 山农18 Shannong 18, 鲁麦23号Lumai 23, 鲁麦21 Lumai 21, 石家庄8号 Shijiazhuang 8
单株干重 SSDW (g)	<5%	14	山农28 SN28, 长6878 C6878, 山农18 Shannong 18, 百农4199 Bainong 4199, 鲁麦23号Lumai 23, 济麦19 Jimai 19, 沧麦119 Cangmai 119, 济宁16 Jining 16, 衡4399 Heng 4399, 烟农19 YN19, 金禾991 Jinhe 991, 烟农15 Yannong 15, 运旱2129 Yunhan 2129, 石新828 Shixin 828
根长 RL (cm)	无影响 No effect	13	山农18 Shannong 18, 长6359 Chang 6359, 鲁麦23号Lumai 23, 运旱2129 Yunhan 2129, 沧麦119 Cangmai 119, 山农28SN28, 优麦3号 Youmai 3, 济宁16 Jining 16, 中优9507 Zhongyou 9507, 鲁麦1号 Lumai 1, 长6878 C6878, 石家庄8号 Shijiazhuang 8, 鲁麦21 Lumai 21
苗长 SL (cm)	<10%	9	青麦6号 Qingmai 6, 长6359 Chang 6359, 长6878 Chang 6878, 山农18 Shannong 18, 鲁麦23号Lumai 23, 济宁16 Jining 16, 济麦19 Jimai 19, 沧麦119 Cangmai 119, 山农16 Shannong 16

Table S3

Table S4

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Fig. 8

Fig. 9

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基因号 Gene ID	基因名称 Gene name	上游引物序列 Primer sequences (5'−3')	下游引物序列 Primer sequences (5'−3')
LOC542814	Actin	CCGGCATTGTCCACATGAA	CCAAAAGGAAAAGCTGAACCG
TraesCS2A02G289700	TDP1	GGAGGGTTGCTACTCAGACGG	GGAGAAGCTGTGGTAGGGTCAC
TraesCS2D02G338700	PIMT	GGGCTTTACCCCTTACACCG	AACCACTGCCTGATCCAACGT

指标 Index	变异来源 Source of variation	品种 Cultivar	处理 Treatment	品种×处理 Cultivar × treatment
发芽势 GE (%)	方差SS	11,927.286	2523.000	3543.667
	自由度DF	127	1	127
	均方差MS	93.916	2523.000	27.903
	F值F-value	14.041^**	377.198^**	4.172^**
发芽率 GP (%)	方差SS	935.967	86.001	469.499
	自由度DF	127	1	127
	均方差MS	7.370	86.001	3.697
	F值F-value	2.758^**	32.188^**	1.384^**
发芽指数 GI	方差SS	2054.155	2502.913	513.813
	自由度DF	127	1	127
	均方差MS	16.174	2502.913	4.046
	F值F-value	25.364^**	3924.998^**	6.344^**
活力指数 VI	方差SS	2.862	3.315	0.612
	自由度DF	127	1	127
	均方差MS	0.023	3.315	0.005
	F值F-value	18.525^**	2724.480^**	3.963^**
单株干重 SSDW (mg)	方差SS	0.002	0.001	0.000
	自由度DF	127	1	127
	均方差MS	1.91E-05	0.001	3.08E-06
	F值F-value	15.116^**	876.879^**	2.436^**
根长 RL (cm)	方差SS	16,633.052	16,985.516	13,768.896
	自由度DF	127	1	127
	均方差MS	128.938	16,985.516	108.417
	F值F-value	43.832^**	5774.159^**	36.856^**
苗长 SL (cm)	方差SS	8147.920	11,212.904	1414.555
	自由度DF	127	1	127
	均方差MS	63.162	11,212.904	11.138
	F值F-value	38.678^**	6866.278^**	6.821^**
根冠比 R/S	方差SS	16.194	25.806	4.746
	自由度DF	127	1	127
	均方差MS	0.128	25.806	0.037
	F值F-value	10.548^**	2134.674^**	3.091^**

Difference in germination characteristics of different winter wheat cultivars under drought stress

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指标 Index	降幅 Decrease amplitude	品种数量 Number of cultivars	品种名称 Cultivar name
发芽势 GE (%)	20%-26%	3	15P410, 新麦38 Xinmai 38, 兰德50856 Lande 50856
发芽率 GP (%)	5%-10%	2	沧麦119 Cangmai 119, 新麦38 XM38
发芽指数 GI	20%-25%	9	瑞华1568 Ruihua 1568, 济南17号 Jinan 17, 泰山27 Taishan 27, 西农115 Xinong 15, 华育198 Huayu 198, 临麦2号 Linmai 2, 鲁麦14号 Lumai 14, 济麦44 Jimai 44, 新麦38 XM38
活力指数 VI	40%-51%	3	豫麦35 Yumai 35, 新麦38 XM38, 乐麦185 Lemai 185
单株干重 SSDW (g)	20%-45%	12	Karl92, 郑麦16 Zhengmai 16, 冀麦26 Jimai 26, 藁优5218 Gaoyou 5218, 淮麦608 Huaimai 608, 中麦175 Zhongmai 175, 临麦2号 Linmai 2, 藁城8901 Gaocheng 8901, 京9428 Jing 9428, 新麦38 XM38, 豫麦35 Yumai 35, 乐麦185 Lemai 185
根长 RL (cm)	35%-41%	17	徐麦14017 Xumai 14017, 山农22 Shannong 22, 金禾991 Jinhe 991, 百农4199 Bainong 4199, 豫麦35 Yumai 35, 淄麦12 Zimai 12, TKM6007, 济南17号 Jinan 17, 鑫麦296 XM296, Y4188, 冀麦u87 Jimai u87, 济麦19 Jimai 19, 赵农1632 Zhaonong 1632, 冠麦9号 Guanmai 9, 冀中麦6号 Jizhongmai 6, 潍9903 Wei 9903, 鲁原502 Luyuan 502
苗长 SL (cm)	30%-34%	7	山农26 Shannong 26, 冀5265 Ji 5265, 瑞华1568 Ruihua 1568, 百农4199 Bainong 4199, 中优9507 Zhongyou 9507, 晋麦30 Jinmai 30, 京冬8号 Jingdong 8

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