种植密度和喷施乙烯利对夏玉米木质素代谢和抗倒伏性能的调控

doi:10.3864/j.issn.0578-1752.2022.02.006

Abstract

Abstract:

【Objective】 The purpose of this study was to investigate the regulation mechanism of planting density and spraying ethephon on lignin metabolism and lodging resistance characteristics and to explore the mechanism of planting density and ethephon application on lodging resistance characteristics of summer maize. 【Method】 In this study, the summer maize hybrid, Xundan20, was grown by spraying water or ethephon at the seven-expanded-leaf stage under three different plant densities (60 000 plants/hm², low density, L; 75 000 plants/hm², medium density, M; 90 000 plants/hm², high density, H) in order to explore the effects of density and ethephon on plant morphology, the third internode microstructure, lignin metabolism and yield, etc. 【Result】 Compared with LCK at milking stage, the internode length of the third stem under HCK increased by 19.75%. The stem diameter, stalk rind penetration strength, small vascular bundle number, small vascular bundle area and cortex thickness under HCK were 8.00%, 43.46%, 20.41%, 26.92% and 22.05% lower than those under LCK, respectively. The lignin accumulation and enzyme activity of PAL, 4-CL, CAD and POD under HCK were 24.04%, 33.81%、10.92%, 49.06% and 20.78% lower than those under LCK, respectively. Compared with HCK at milking stage, the internode length of the third stem under HE decreased by 34.84%. The stem diameter, stalk rind penetration strength, small vascular bundle number, small vascular bundle area and cortex thickness of HE were 14.22%,66.10%,22.71%,22.11% and 35.96% higher than those under HCK, respectively. The lignin accumulation and enzyme activity of PAL, 4-CL, CAD and POD of HE were 28.28%, 30.74%, 13.01%, 59.26% and 16.99% higher than those under HCK, respectively. 【Conclusion】 Lodging resistance of summer maize decreased with the increasing of planting density. After the application of ethephon, the stem strength and lignin metabolism of summer maize were enhanced, the lodging resistance was enhanced, and finally maize yield was increased. The effect of spraying ethephon on the lignin metabolism and lodging resistance of XD 20 was the most significant when the planting density was 90 000 plants/hm², and yield was the highest.

Key words: planting density, ethephon, summer maize, lodging resistance, lignin metabolism

GENG WenJie, LI Bin, REN BaiZhao, ZHAO Bin, LIU Peng, ZHANG JiWang. Regulation Mechanism of Planting Density and Spraying Ethephon on Lignin Metabolism and Lodging Resistance of Summer Maize[J].Scientia Agricultura Sinica, 2022, 55(2): 307-319.

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References 33

[1]	李姝彤, 边大红, 何璐, 王东梅, 郑晓萌, 崔彦宏. 黄淮海夏玉米倒伏及化控抗倒技术研究进展. 玉米科学, 2018, 26(3):95-101.
	LI S T, BIAN D H, HE L, WANG D M, ZHENG X M, CUI Y H. Lodging characteristics of summer maize and chemical control research progresses preventing lodging in the North China Plain. Journal of Maize Sciences, 2018, 26(3):95-101. (in Chinese)
[2]	薛军, 王克如, 谢瑞芝, 勾玲, 张旺锋, 明博, 侯鹏, 李少昆. 玉米生长后期倒伏研究进展. 中国农业科学, 2018, 51(10):1845-1854.
	XUE J, WANG K R, XIE R Z, GOU L, ZHANG W F, MING B, HOU P, LI S K. Research progress of maize lodging during late stage. Scientia Agricultura Sinica, 2018, 51(10):1845-1854. (in Chinese)
[3]	刘洋, 侯廷荣, 郭新平, 柳京国, 白星焕, 董国豪, 董树亭, 孔晓民, 贾春兰, 吴明泉, 张吉旺. 山东省玉米产业发展现状与对策分析. 山东农业大学学报(社会科学版), 2017, 19(2):24-30.
	LIU Y, HOU T R, GUO X P, LIU J G, BAI X H, DONG G H, DONG S T, KONG X M, JIA C L, WU M Q, ZHANG J W. Analysis on current situation and countermeasures of maize industry in Shandong province. Journal of Shandong Agricultural University(Social Science Edition), 2017, 19(2):24-30. (in Chinese)
[4]	李少昆, 王崇桃. 中国玉米生产技术的演变与发展. 中国农业科学, 2009, 42(6):1941-1951.
	LI S K, WANG C T. Evolution and development of maize production techniques in China. Scientia Agricultura Sinica, 2009, 42(6):1941-1951. (in Chinese)
[5]	TOLLENAAR M, LEE E A. Yield potential, yield stability and stress tolerance in maize. Field Crops Research, 2002, 75(2/3):161-169. doi: 10.1016/S0378-4290(02)00024-2
[6]	刘伟, 吕鹏, 苏凯, 杨今胜, 张吉旺, 董树亭, 刘鹏, 孙庆泉. 种植密度对夏玉米产量和源库特性的影响. 应用生态学报, 2010, 21(7):1737-1743.
	LIU W, LÜ P, SU K, YANG J S, ZHANG J W, DONG S T, LIU P, SUN Q Q. Effects of planting density on the grain yield and source-sink characteristics of summer maize. Chinese Journal of Applied Ecology, 2010, 21(7):1737-1743. (in Chinese)
[7]	冯尚宗, 王世伟, 彭美祥, 刘宁, 赵桂涛. 不同种植密度对夏玉米产量、叶面积指数和干物质积累的影响. 江西农业学报, 2015, 27(3):1-5, 22.
	FENG S Z, WANG S W, PENG M X, LIU N, ZHAO G T. Effects of different planting densities on grain yield, LAI and dry matter accumulation of summer maize. Acta Agriculturae Jiangxi, 2015, 27(3):1-5, 22. (in Chinese)
[8]	黄海. 群体密度对玉米茎秆及根系抗倒伏特性的影响[D]. 吉林: 吉林农业大学, 2013.
	HUANG H. Effects of population density on lodging-resistance characteristic of stalk and root in maize[D]. Jilin: Jilin Agricultural University, 2013. (in Chinese)
[9]	BAUCHER M, MONTIES B, MOMTAGU M V, BOERJAN W. Biosynthesis and genetic engineering of lignin. Critical Reviews in Plant Sciences, 1998, 17(2):125-197. doi: 10.1080/07352689891304203
[10]	BOERJAN W, RALPH J, BAUCHER M. Lignin biosynthesis. Annual Review of Plant Biology, 2003, 54(1):519-546. doi: 10.1146/arplant.2003.54.issue-1
[11]	HAHLBROCK K, SCHEEL D. Physiology and molecular biology of phenylpropanoid metabolism. Annual Review of Plant Physiology and Plant Molecular Biology, 1989, 40(1):347-369. doi: 10.1146/arplant.1989.40.issue-1
[12]	耿飒, 徐存拴, 李玉昌. 木质素的生物合成及其调控研究进展. 西北植物学报, 2003, 23(1):171-181.
	GENG S, XU C S, LI Y C. Advance in biosynthesis of lignin and its regulation. Acta Botanica Boreali-Occidentalia Sinica, 2003, 23(1):171-181. (in Chinese)
[13]	李伟, 熊谨, 陈晓阳. 木质素代谢的生理意义及其遗传控制研究进展. 西北植物学报, 2003, 23(4):675-681.
	LI W, XIONG J, CHEN X Y. Advances in the research of physiological significances and genetic regulation of lignin metabolism. Acta Botanica Boreali-Occidentalia Sinica, 2003, 23(4):675-681. (in Chinese)
[14]	董荷荷, 骆永丽, 李文倩, 王元元, 张秋霞, 陈金, 金敏, 李勇, 王振林. 不同春季追氮模式对小麦茎秆抗倒性能及木质素积累的影响. 中国农业科学, 2020, 53(21):4399-4414.
	DONG H H, LUO Y L, LI W Q, WANG Y Y, ZHANG Q X, CHEN J, JIN M, LI Y, WANG Z L. Effects of different spring nitrogen topdressing modes on lodging resistance and lignin accumulation of winter wheat. Scientia Agricultura Sinica, 2020, 53(21):4399-4414. (in Chinese)
[15]	王庭杰. 水稻茎组织构建与木质素代谢对抗倒伏的影响[D]. 新乡:河南师范大学, 2015.
	WANG T J. Effects of stalk tissue and lignin metabolism on the lodging resistance of rice[D]. Xinxiang: Henan Normal University, 2015. (in Chinese)
[16]	邹俊林. 套作大豆苗期茎秆抗倒特征及其与木质素合成的关系研究[D]. 成都: 四川农业大学, 2015.
	ZOU J L. Characteristics of stem lodging resistance of relay strip intercropping soybean and its relationship with lignin synthesis at seedling stage[D]. Chengdu: Sichuan Agricultural University, 2015. (in Chinese)
[17]	张云明, 田保明, 师恭曜, 黄乐乐, 柳洋洋. 油菜茎秆几种发育相关酶的活性对茎秆抗倒伏性的影响. 中国农学通报, 2011, 27(18):135-138.
	ZHANG Y M, TIAN B M, SHI G Y, HUANG L L, LIU Y Y. Effects of the key enzymes activity on the stem lodging resistance in Brassica napus L. Chinese Agricultural Science Bulletin, 2011, 27(18):135-138. (in Chinese)
[18]	BANDARA P, TANINO K. Paclobutrazol enhances minituber production in Norland potatoes. Journal of Plant Growth Regulation, 1995, 14(3):151-155. doi: 10.1007/BF00210917
[19]	刘文彬, 冯乃杰, 李东, 张洪鹏, 何天明, 赵晶晶, 王畅, 徐延辉. 2种调节剂对玉米抗倒伏和产量的影响. 黑龙江八一农垦大学学报, 2018, 30(2):19-24.
	LIU W B, FENG N J, LI D, ZHANG H P, HE T M, ZHAO J J, WANG C, XU Y H. Effect of two kinds of regulator on lodging- resistance and yield of maize. Journal of Heilongjiang Bayi Agricultural University, 2018, 30(2):19-24. (in Chinese)
[20]	张子学, 朱仕燕, 李文阳, 刘正. 化控剂-乙烯利对玉米植株主要性状和产量的影响. 中国农学通报, 2014, 30(3):209-213.
	ZHANG Z X, ZHU S Y, LI W Y, LIU Z. Effect of chemical control agent-ethephon on main characters and yield of maize. Chinese Agricultural Science Bulletin, 2014, 30(3):209-213. (in Chinese)
[21]	张志良, 瞿伟菁, 李小方. 植物生理学实验指导. 北京: 高等教育出版社, 2009.
	ZHANG Z L, QU W J, LI X F. Experimental Instruction in Plant Physiology. Beijing: Higher Education Press, 2009. (in Chinese)
[22]	MORRISON T A, KESSLER J R, HATFIELD R D, BUXTON D. Activity of two lignin biosynthesis enzymes during development of a maize internode. Journal of the Science of Food and Agriculture, 2010, 65(2):133-139. doi: 10.1002/(ISSN)1097-0010
[23]	MOERSCHBACHER B M, NOLL U M, FLOTT B E. Lignin biosynthetic enzymes in stem rust infected, resistant and susceptible near-isogenic wheat lines. Physiological and Molecular Plant Pathology, 1988, 33(1):33-46. doi: 10.1016/0885-5765(88)90041-0
[24]	王庭杰, 张亮, 韩琼, 郑凤霞, 王天琪, 冯娜娜, 王太霞. 玉米茎秆细胞壁和组织构建对抗压强度的影响. 植物科学学报, 2015, 33(1):109-115.
	WANG T J, ZHANG L, HAN Q, ZHENG F X, WANG T Q, FENG N N, WANG T X. Effects of stalk cell wall and tissue on the compressive strength of maize. Plant Science Journal, 2015, 33(1):109-115. (in Chinese)
[25]	姚敏娜, 施志国, 薛军, 杨再文, 勾玲, 张旺锋. 种植密度对玉米茎秆皮层结构及抗倒伏能力的影响. 新疆农业科学, 2013, 50(11):2006-2014.
	YAO M N, SHI Z G, XUE J, YANG Z W, GOU L, ZHANG W F. The effects of different planting densities on the cortex structure of steam and lodging resistance in maize. Xinjiang Agricultural Sciences, 2013, 50(11):2006-2014. (in Chinese)
[26]	田晓东. 乙烯利对夏玉米抗倒伏能力的影响研究[D]. 保定: 河北农业大学, 2014.
	TIAN X D. Studies on the effect of ethephon on lodging resistance of summer maize[D]. Baoding: Hebei Agricultural University, 2014. (in Chinese)
[27]	郑孟静. 不同小麦品种抗倒性能差异的内在机制及其对氮密互作的调控响应[D]. 泰安: 山东农业大学, 2017.
	ZHENG M J. The mechanism of culm lodging resistance difference in wheat varieties and its regulation effects of nitrogen and density[D]. Tai’an: Shandong Agricultural University, 2017. (in Chinese)
[28]	柴孟竹, 李钊, 秦东玲, 刘禹辰, 徐密林, 董璐铭, 张倩, 杨德光, 张平. 乙烯利对玉米茎秆抗倒伏性的调控效应. 玉米科学, 2017, 25(6):63-72.
	CHAI M Z, LI Z, QIN D L, LIU Y C, XU M L, DONG L M, ZHANG Q, YANG D G, ZHANG P. Effect of ethephon on lodging resistance of maize stem. Journal of Maize Sciences, 2017, 25(6):63-72. (in Chinese)
[29]	杨增玲, 梅佳琪, 曹聪, 纪冠亚, 韩鲁佳. 基于红外光谱的不同农作物秸秆磨木木质素差异表征. 农业工程学报, 2018, 34(19):219-224.
	YANG Z L, MEI J Q, CAO C, JI G Y, HAN L J. Traits of milled wood lignin isolated from different crop straw based on FT-IR. Transactions of the Chinese Society of Agricultural Engineering, 2018, 34(19):219-224. (in Chinese)
[30]	MANGA-ROBLES A, SANTIAGO R, MALVAR R A, MORENO- GONZALEZ V, FORNALE S, LOPEZ I, CENTENO M L, ACEBES J L, ALVAREZ J M, CAPARROS-PUIZ D, ENCINA A, GARCIA- ANGULO P. Elucidating compositional factors of maize cell walls contributing to stalk strength and lodging resistance. Plant Science, 2021, 307:110882. doi: 10.1016/j.plantsci.2021.110882
[31]	佘恒志, 聂姣, 李英双, 刘星贝, 胡丹, 马珊, 次仁卓嘎, 汪灿, 吴东倩, 阮仁武, 易泽林. 不同抗倒伏能力甜荞品种茎秆木质素及其单体合成特征. 中国农业科学, 2017, 50(7):1202-1209.
	SHE H Z, NIE J, LI Y S, LIU X B, HU D, MA S, CIREN Z G, WANG C, WU D Q, RUAN R W, YI Z L. Lignin and lignin monomer synthetic characteristics of culm in common buckwheat with different lodging resistance capabilities. Scientia Agricultura Sinica, 2017, 50(7):1202-1209. (in Chinese)
[32]	张洪生, 赵明, 吴沛波, 翟延举, 姜雯. 种植密度对玉米茎秆和穗部性状的影响. 玉米科学, 2009, 17(5):130-133.
	ZHANG H S, ZHAO M, WU P B, ZHAI Y J, JIANG W. Effects of the plant density on the characteristics of maize stem and ear. Journal of Maize Sciences, 2009, 17(5):130-133. (in Chinese)
[33]	王海永, 陈小文, 牛晓雪, 苏贺, 申婷婷, 董学会. 乙烯利对夏玉米果穗生长发育影响及生理机制探究. 玉米科学, 2014, 22(5):64-70.
	WANG H Y, CHEN X W, NIU X X, SU H, SHEN T T, DONG X H. Influence of ethephon on maize cluster growth and development and the physiological mechanism. Journal of Maize Sciences, 2014, 22(5):64-70. (in Chinese)

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处理 Treatment	2017		2018
处理 Treatment	调查时期Investigation stage	倒伏率 Lodging percentage (%)	调查时期Investigation stage	倒伏率 Lodging percentage (%)
LCK	R3	3.4e	R3	11.1c
MCK	R3	14.5b	R3	44.1b
ME	R3	5.3d	R3	6.7d
HCK	R3	20.5a	VT	69.2a
HE	R3	10.2c	R3	11.2c

年份 Year	处理 Treatment	抽雄期 Tasseling stage				乳熟期 Milking stage
年份 Year	处理 Treatment	第1节间 1st	第3节间 3rd	第5节间 5th	第7节间 7th	第1节间 1st	第3节间 3rd	第5节间 5th	第7节间 7th
2017	LCK	3.00a	10.00c	13.50c	14.00b	2.67a	9.17a	15.33a	17.13a
	MCK	3.33a	11.67b	15.00b	14.83b	2.67a	10.17a	15.50a	17.83a
	ME	3.33a	8.33d	12.00d	12.33c	3.17a	7.33b	9.00b	13.00b
	HCK	3.33a	13.00a	17.17a	17.00a	2.67a	10.50a	16.33a	18.83a
	HE	3.67a	10.33c	12.33d	11.00d	2.33a	7.00b	8.67b	12.00b
2018	LCK	6.67a	13.10ab	15.27c	16.40b	6.00ab	13.20c	16.50bc	16.65b
	MCK	7.00a	13.67a	17.00b	17.00b	6.50a	15.33b	17.00b	16.67b
	ME	4.33b	11.33b	14.33c	15.33c	4.93b	8.93d	15.23c	15.93b
	HCK	7.33a	14.43a	19.00a	18.33a	6.33a	16.50a	19.00a	18.25a
	HE	4.00b	11.67b	14.00c	16.50b	5.50ab	8.57d	15.47bc	15.57b
ANOVA
年份Year (Y)		**	**	**	**	**	**	**	ns
密度Density (D)		ns	**	**	**	ns	*	ns	ns
乙烯利Ethephon (E)		**	**	**	**	*	**	**	**
密度×乙烯利 (D×E)		ns	ns	**	*	ns	ns	ns	*

年份 Year	处理 Treatment	抽雄期 Tasseling stage				乳熟期 Milking stage
年份 Year	处理 Treatment	第1节间 1st	第3节间 3rd	第5节间 5th	第7节间 7th	第1节间 1st	第3节间 3rd	第5节间 5th	第7节间 7th
2017	LCK	27.84a	26.62a	23.87a	21.96ab	26.36a	22.92b	22.44b	22.52ab
	MCK	26.38b	24.76b	22.52b	20.06c	25.48bc	21.92c	22.19b	22.00b
	ME	29.00a	26.70a	23.89a	22.69a	25.46bc	22.64bc	22.39b	23.04ab
	HCK	24.45c	21.97c	19.97c	19.91c	23.48d	20.65d	20.45c	20.35c
	HE	28.07a	25.65ab	22.59b	20.64bc	24.93c	23.15ab	22.86b	22.99ab
2018	LCK	28.83b	27.43b	26.50b	24.02c	26.06a	21.65b	23.33a	22.67a
	MCK	26.00c	25.19c	24.17c	23.14d	24.58b	20.53c	19.00b	19.33c
	ME	28.17ab	29.32a	29.50a	27.14a	26.73a	23.67a	22.35a	22.33a
	HCK	25.76c	25.75c	22.07d	21.31e	23.30c	20.33c	17.03c	17.00d
	HE	29.61a	30.58a	30.07a	28.08a	24.21b	23.65a	23.33a	21.33b
ANOVA
年份Year (Y)		ns	**	**	**	ns	ns	ns	*
密度Density (D)		**	**	**	ns	**	*	*	*
乙烯利Ethephon (E)		**	**	**	**	*	**	**	**
密度×乙烯利 (D×E)		ns	ns	ns	ns	ns	ns	ns	ns

处理 Treatment	单株维管束数目 Number of vascular bundle per plant (No.)			小维管束面积 Small vascular bundle area (mm²)	皮层厚度 Cortex thickness (μm)
处理 Treatment	小维管束 Small vascular bundle	大维管束 Big vascular bundle	总数 Total number of vascular bundle	小维管束面积 Small vascular bundle area (mm²)	皮层厚度 Cortex thickness (μm)
LCK	457.33±1.20a	170.67±0.67a	628.00±0.58a	0.130±0.003a	67.79±0.07b
MCK	388.00±0.58c	165.33±0.33ab	624.00±0.33a	0.102±0.002c	58.09±0.14c
ME	416.00±1.53b	153.33±0.88bc	581.33±2.19b	0.114±0.002b	68.10±0.52b
HCK	364.00±0.58d	144.00±0.67cd	522.67±0.33c	0.095±0.000c	52.84±0.13d
HE	446.67±3.28a	134.67±2.60d	517.33±4.58c	0.116±0.001b	71.84±0.38a

年份 Year	处理 Treatment	公顷穗数 Ears (No. hm^-2)	穗粒数 Kernels per ear	千粒重 1000-grain weight (g)	产量 Grain yield (kg·hm^-2)
2017	LCK	50420d	532a	331.55a	8894.91c
	MCK	60161c	509ab	324.49a	9932.49b
	ME	65346b	506b	301.27b	9954.73b
	HCK	59414c	476c	309.76b	8767.37c
	HE	82617a	496bc	306.52b	12566.32a
2018	LCK	45949d	600a	318.26a	8777.77d
	MCK	59678c	578b	303.92b	10500.73c
	ME	68140b	573b	298.61c	11665.40b
	HCK	25166e	353d	268.29e	2381.91e
	HE	82587a	543c	290.59d	13039.17a
ANOVA
年份Year (Y)		*	ns	**	ns
密度Density (D)		ns	**	**	ns
乙烯利Ethephon (E)		**	**	ns	**
密度×乙烯利 (D×E)		**	**	**	**

Regulation Mechanism of Planting Density and Spraying Ethephon on Lignin Metabolism and Lodging Resistance of Summer Maize

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