干旱胁迫对云南薏苡新品种形态和生理指标的影响（英文）
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摘要
为了研究云南薏苡新品种在不同生育时期干旱胁迫对薏苡形态和生理指标的影响,本文以文薏4号,文薏5号2个云南薏苡新品种为试验材料,采取盆栽的方法,以正常浇水为对照(CK),测定2个品种分别在苗期、分蘖期和拔节期干旱胁迫后的株高和茎粗等形态指标及蛋白质、可溶性糖、叶绿素含量和相对电导率(REC)等生理指标,并对各项指标进行数据统计和方差分析。结果表明在形态指标方面,文薏4号和文薏5号的株高在苗期受干旱胁迫影响较大,而茎粗在苗期和拔节期均受干旱胁迫影响较大;在生理指标方面,文薏5号的相对电导率、蛋白质和可溶性糖含量增加较多,叶绿素含量减少较多,说明文薏5号受干旱胁迫影响较大。通过极点排序法分析得出供试材料在不同时期抗旱性强弱为:文薏5号拔节期>文薏4号拔节期>文薏4号苗期>文薏5号苗期>文薏4号分蘖期>文薏5号分蘖期,仅从生育时期来看,抗旱性强弱为:拔节期>苗期>分蘖期。综上所述,文薏4号抗旱性较强,适宜抗旱栽培。
In order to study the effects of drought stress on the morphological and physiological indexes of Yunnan Coix at different growth stages, two new varieties of Yunnan Coix Wenyi 4 and Wenyi 5 were used as experimental materials, potted and compared with CK by normal irrigation. Morphological indices such as plant height, stem diameter and physiological indices such as protein, soluble sugar,chlorophyll content and relative conductivity(REC) of the two varieties under drought stress at seedling stage, tillering stage and jointing stage were determined,and data statistics and variance analysis were performed for each index. The results showed that the morphological indices, plant height of Wenyi 4 and Wenyi 5 were significantly affected by drought stress at seedling stage, while the stem diameter was significantly affected by drought stress at seedling and jointing stage. In terms of physiological indices, the relative conductivity, protein and soluble sugar contents of Wenyi 5 increased at a higher degree, whereas chlorophyll content decreased at a higher degree, indicating that Wenyi 5 was greatly affected by drought stress.Through the analysis of drought resistance of the tested materials at different stages by polar ordination method, the results were as follows: jointing stage of Wenyi5>jointing stage of Wenyi 4>seedling stage of Wenyi 4>seedling stage of Wenyi5>tillering Stage of Wenyi 4>Tillering Stage of Wenyi 5. For the growth period,the drought resistance was as follows: jointing stage>seedling stage>tillering stage.In conclusion, Wenyi 4 has strong drought resistance and is suitable for droughtresistant cultivation.
In order to study the effects of drought stress on the morphological and physiological indexes of Yunnan Coix at different growth stages, two new varieties of Yunnan Coix Wenyi 4 and Wenyi 5 were used as experimental materials, potted and compared with CK by normal irrigation. Morphological indices such as plant height, stem diameter and physiological indices such as protein, soluble sugar,chlorophyll content and relative conductivity(REC) of the two varieties under drought stress at seedling stage, tillering stage and jointing stage were determined,and data statistics and variance analysis were performed for each index. The results showed that the morphological indices, plant height of Wenyi 4 and Wenyi 5 were significantly affected by drought stress at seedling stage, while the stem diameter was significantly affected by drought stress at seedling and jointing stage. In terms of physiological indices, the relative conductivity, protein and soluble sugar contents of Wenyi 5 increased at a higher degree, whereas chlorophyll content decreased at a higher degree, indicating that Wenyi 5 was greatly affected by drought stress.Through the analysis of drought resistance of the tested materials at different stages by polar ordination method, the results were as follows: jointing stage of Wenyi5>jointing stage of Wenyi 4>seedling stage of Wenyi 4>seedling stage of Wenyi5>tillering Stage of Wenyi 4>Tillering Stage of Wenyi 5. For the growth period,the drought resistance was as follows: jointing stage>seedling stage>tillering stage.In conclusion, Wenyi 4 has strong drought resistance and is suitable for droughtresistant cultivation.
引文
[1]YANG N W(杨念婉),LI A L(李艾莲),CHEN C X(陈彩霞).Effect of planting density and sowing date on coix yield and its correlation analysis(种植密度和播期对薏苡产量的影响及相关性分析).Chinese Agricultural Science Bulletin(中国农学通报),2010,26(13):149-152.
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[4]HU J(胡军),JIN G L(金国梁).Nutrition and medicinal value of coix seed(薏苡仁的营养与药用价值).Journal of Food and Nutrition in China(中国食物与营养),2007,13(6):57-58.
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[9]CHEN Y Q(陈义强).Screening of drought-resistant sugarcane germplasm resources and drought-resistant analysis of the hybrid progenies of banmao(甘蔗抗旱种质资源的筛选及斑茅杂种后代抗旱性分析).Fujian Agricultural and Forestry University(福建农林大学),2005.
[10]RONG X L(荣秀连).Study and evaluation on drought resistance of three cold season turfgrass species(三种冷季型草坪草抗旱性研究评价).Suzhou University(苏州大学),2010.
[11]LI H L(李海玲),PENG S M(彭书明),LI L(李凛),et al.Comparisons of four common protein concentration measurement methods(4种常用蛋白浓度测定方法的比较).Chinese Journal of Biochemical Drugs(中国生化药物杂志),2008,(04):277-278,282.
[12]ZHANG A Y(张艾英),GUO E H(郭二虎),FAN H P(范惠萍),et al.Physiological characteristics of drought resistance under water stress in millet at different growth stages(谷子不同生育时期水分胁迫抗旱生理特性研究).Journal of Shanxi Agricultural Science(山西农业科学),2014,42(07):669-671.
[13]YUAN R(袁蕊),LI P(李萍),HU X X(胡晓雪),et al.Effects of drought stress on physiological characteristics and yield of wheat(干旱胁迫对小麦生理特性及产量的影响).Journal of Shanxi Agricultural Science(山西农业科学),2016,44(10):1446-1449,1466.
[14]FENG H Y(冯海燕),XI J G(习金根).Effects of different water stress on physiological characteristics of sisal(不同水分胁迫对剑麻生理特性的影响).Journal of Anhui Agricultural Science(安徽农业科学),2017,45(19):13-15.
[2]ZHANG Y L(张玉玲).Chromosome ploidy identification and karyotype analysis of coix and coix seed(薏苡和薏米的染色体倍数鉴定及核型分析).Journal of Liaoning Agricultural Vocational and Technical College(辽宁农业职业技术学院学报),2003,5,5(4):14-16.
[3]LI Z F(李泽锋),HAO Y L(郝云良).Nutritional components and comprehensive utilization of coix(薏苡营养成分及综合利用).Journal of Agricultural Science and Technology and Equipment(农业科技与装备),2012,(5):74-76.
[4]HU J(胡军),JIN G L(金国梁).Nutrition and medicinal value of coix seed(薏苡仁的营养与药用价值).Journal of Food and Nutrition in China(中国食物与营养),2007,13(6):57-58.
[5]Editor-in-chief,Institute of Medicinal Plant Resources Development,Chinese Academy of Medical Sciences.Chinese Medicinal Plant Cultivation(中国药用植物栽培学),1991,984-991.
[6]FAN T L(樊天林).Wet cultivation of coix can increase yield(薏苡湿生栽培能增产).Journal of Peasant Adviser(农家参谋),2005,(4):20.
[7]WANG H X(王红霞).High yield wet coix cultivation techniques(薏苡湿法高产栽培技术).Journal of Hebei Agricultural Science and Technology(河北农业科技),2003,(2):5-5.
[8]WU Y X(吴永祥).Wet cultivation method of coix(薏苡湿生栽培法).Journal of Agricultural Science and Technology Communication(农业科技通讯),1990,(4):8-9.
[9]CHEN Y Q(陈义强).Screening of drought-resistant sugarcane germplasm resources and drought-resistant analysis of the hybrid progenies of banmao(甘蔗抗旱种质资源的筛选及斑茅杂种后代抗旱性分析).Fujian Agricultural and Forestry University(福建农林大学),2005.
[10]RONG X L(荣秀连).Study and evaluation on drought resistance of three cold season turfgrass species(三种冷季型草坪草抗旱性研究评价).Suzhou University(苏州大学),2010.
[11]LI H L(李海玲),PENG S M(彭书明),LI L(李凛),et al.Comparisons of four common protein concentration measurement methods(4种常用蛋白浓度测定方法的比较).Chinese Journal of Biochemical Drugs(中国生化药物杂志),2008,(04):277-278,282.
[12]ZHANG A Y(张艾英),GUO E H(郭二虎),FAN H P(范惠萍),et al.Physiological characteristics of drought resistance under water stress in millet at different growth stages(谷子不同生育时期水分胁迫抗旱生理特性研究).Journal of Shanxi Agricultural Science(山西农业科学),2014,42(07):669-671.
[13]YUAN R(袁蕊),LI P(李萍),HU X X(胡晓雪),et al.Effects of drought stress on physiological characteristics and yield of wheat(干旱胁迫对小麦生理特性及产量的影响).Journal of Shanxi Agricultural Science(山西农业科学),2016,44(10):1446-1449,1466.
[14]FENG H Y(冯海燕),XI J G(习金根).Effects of different water stress on physiological characteristics of sisal(不同水分胁迫对剑麻生理特性的影响).Journal of Anhui Agricultural Science(安徽农业科学),2017,45(19):13-15.