5个高羊茅品种萌发期的耐盐性比较
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摘要
以NaCl为胁迫因子,设0(CK)、50、100、150、200、250 mmol·L~(–1) 6个盐分梯度,研究5个高羊茅(Festuca arundinacea)品种种子萌发的耐盐能力,以期筛选出耐盐能力强的高羊茅品种。结果表明,在低NaCl浓度(50 mmol·L~(–1))下,各品种发芽势、发芽率、发芽指数、种子活力指数、苗长、根长和盐害率与对照相比几乎无变化(P> 0.05)。50～250 mmol·L~(–1)的盐浓度范围内,各品种相对发芽势、相对发芽率、相对发芽指数、种子活力指数、相对苗长与相对根长均随盐浓度的增加而降低,相对盐害率随盐浓度的增加而升高。NaCl浓度达到最大(250 mmol·L~(–1))时,相对盐害率达到最高,相对发芽势、相对发芽率、相对发芽指数、种子活力指数、相对苗长、相对根长等指标降至最低。5个高羊茅品种种子萌发期耐盐性强弱依次为踏火6号>警犬>红宝石2号>贝克>超级警犬。
The top of paper(TP) germination method was used to compare the salt tolerance for five tall fescue(Festuca arundinacea) strains at the germination stage in an illumination incubator. Double-layered paper moistened with pure distilled water served as the control, whereas the papers for the experiment were moistened with 6 NaCl concentrations respectively: 50, 100, 150, 200 and 250 mmol·L–1. Germination potential, rate, and index, shoot and root length, as well as salt damage rate showed no remarkable difference between the control(P > 0.05) and the strain germinating at 50 mmol·L–1 NaCl. Relative germination potential, percentage, and index, shoot and root length, and seed vigor index decreased with increases in NaCl concentration; however, the relative salt damage increased when the NaCl stress increased from 50 to250 mmol·L–1. At 250 mmol·L–1 NaCl, the seedings were seriously damaged, and the relative germination potential,percentage, and index, shoot and root length, and seed vigor index were at their lowest(P < 0.05). The results following comprehensive assessment indicate that the 5 strains can be arranged as follows in the decreasing order of salt tolerance: Tar Heel Ⅵ > Watchdog > RubyⅡ > Baker > Super Watchdog.
The top of paper(TP) germination method was used to compare the salt tolerance for five tall fescue(Festuca arundinacea) strains at the germination stage in an illumination incubator. Double-layered paper moistened with pure distilled water served as the control, whereas the papers for the experiment were moistened with 6 NaCl concentrations respectively: 50, 100, 150, 200 and 250 mmol·L–1. Germination potential, rate, and index, shoot and root length, as well as salt damage rate showed no remarkable difference between the control(P > 0.05) and the strain germinating at 50 mmol·L–1 NaCl. Relative germination potential, percentage, and index, shoot and root length, and seed vigor index decreased with increases in NaCl concentration; however, the relative salt damage increased when the NaCl stress increased from 50 to250 mmol·L–1. At 250 mmol·L–1 NaCl, the seedings were seriously damaged, and the relative germination potential,percentage, and index, shoot and root length, and seed vigor index were at their lowest(P < 0.05). The results following comprehensive assessment indicate that the 5 strains can be arranged as follows in the decreasing order of salt tolerance: Tar Heel Ⅵ > Watchdog > RubyⅡ > Baker > Super Watchdog.
引文
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[2]董元杰,陈为峰,王文超,王慧桥,诸葛玉平.不同NaCl浓度微咸水灌溉对棉花幼苗生理特性的影响.土壤,2017, 49(6):1140-1145.DONG Y J, CHEN W F, WANG W C, WANG H Q, ZHUGE Y P. Effects of brackish water irrigation under different NaCl concentrations on physiological characteristics of cotton seedlings. Soils, 2017, 49(6):1140-1145.
[3]李建国,濮励杰,朱明,张润森.土壤盐渍化研究现状及未来研究热点.地理学报,2012, 67(9):1233-1245.LI J G, PU L J, ZHU M, ZHANG R S. The present situation and hot issues in the salt-affected soil research. Acta Geographica Sinica,2012, 67(9):1233-1245.
[4]王立艳,潘洁,肖辉,程文娟,杨勇.种植耐盐植物对滨海盐碱地土壤盐分的影响.华北农学报,2014, 29(5):226-231.WANG L Y, PAN J, XIAO H, CHENG W J, YANG Y. Effect of soluble salt on planting salt-tolerant plants of coastal saline soil.Acta Agriculturae Boreali-Sinica, 2014, 29(5):226-231.
[5]张永亮,王学愿,刘杨,程铭.盐胁迫下氮磷钾肥对虉草离子吸收与分布的影响.草地学报,2014, 22(6):1318-1323.ZHANG Y L, WANG X Y, LIU Y, CHENG M. Effects of different NPK fertilizer rates on the ion absorption and distribution of reed canary grass(Phalaris arundinacea)under salt stress. Acta Agrestia Sinica, 2014, 22(6):1318-1323.
[6]周琦,祝遵凌.NaCl胁迫对2种鹅耳枥幼苗生长及离子吸收、分配与运输的影响.北京林业大学学报,2015, 37(12):7-16.ZHOU Q, ZHU Z L. Effects of NaCl stress on seedling growth and mineral ions uptake, distribution and transportation of two varieties of Carpinus L. Journal of Beijing Forestry University, 2015, 37(12):7-16.
[7]王新英,史军辉,刘茂秀.NaCl胁迫对胡杨和新疆杨幼苗体内K+、Na+和Cl-分布的影响.中国沙漠,2013, 33(1):126-132.WANG X Y, SHI J H, LIU M X. Effect of NaCl stress on K+, N+and Cl-allocation in different organs of Populus euphratica and Populus bolleana Lauche seedings. Journal of Desert Research, 2013, 33(1):126-132.
[8]杨杰,曹昀,王秀文,黄佳超,李生.保水剂对高羊茅种子萌发及幼苗生理的影响.水土保持研究,2017, 24(1):351-356.YANG J, CAO Y, WANG X W, HUANG J C, LI S. Effect of super absorbent polymer on germination and physiological characteristics of Festuca arundinacea. Research of Soil and Water Conservation, 2017, 24(1):351-356.
[9]陈志飞,宋书红,张晓娜,张莹,李欣悦,杨云贵.赤霉素对干旱胁迫下高羊茅萌发及幼苗生长的缓解效应.草业学报,2016,25(6):51-61.CHEN Z F, SONG S H, ZHANG X N, ZHANG Y, LI X Y, YANG Y G. Effects of gibberellin on seed germination and seedling growth of tall fescue under drought stress. Acta Prataculturae Sinica, 2016, 25(6):51-61.
[10]田福平,陈子萱,张自和,时永杰,李尚中.硅对植物抗逆性作用的研究.中国土壤与肥料,2007(3):10-14.TIAN F P, CHEN Z X, ZHANG Z H, SHI Y J, LI S Z. Study of resistance to stress of plant on silicon. Soil and Fertilizer Sciences in China, 2007(3):10-14.
[11]刘慧霞,郭兴华,郭正刚.盐生境下硅对坪用高羊茅生物学特性的影响.生态学报,2011,31(23):7039-7046.LIU H X, GUO X H, GUO Z G. Effect of silicon supply on tall fescue(Festuca arundinacea)growth under the salinization conditions. Acta Ecologica Sinica, 2011, 31(23):7039-7046.
[12]宋锐,林丽果,王康英,宋浩然,蒋勇斌,刘慧霞.不同盐生境下硅对高羊茅生物量及生理生化特征的影响.草业学报,2016,25(8):91-97.SONG R, LIN L G, WANG K Y,SONG H R, JIANG Y B,LIU H X. Effects of silicon supply on the biomass and physiochemical features of tall fescue seedlings under different salinization conditions. Acta Prataculturae Sinica, 2016, 25(8):91-97.
[13]李长鼎,谢应忠.高羊茅抗盐性研究进展.农业科学研究,2007, 28(1):61-64.LI C D, XIE Y Z. Progress of salinity tolerance of Festuca arundinacea Schreb. Journal of Agricultural Sciences, 2007, 28(1):61-64.
[14]卢艳敏.不同盐胁迫对高羊茅种子萌发的影响.草业科学,2012, 29(7):1088-1093.LU Y M. Effects of different saline stress on seed germination of tall fescue. Pratacultural Science, 2012, 29(7):1088-1093.
[15]符开欣,刘新,张新全,张建波,苟文龙,张成林,孙铭,马啸.六份川西北短芒披碱草种质萌发期抗旱性评价.中国草地学报,2017, 39(2):41-47.FU K X, LIU X, ZHANG X Q, ZHANG J B, GOU W L, ZHANG C L, SUN M, MA X. Evaluation of drought resistance of six Elymus breviaristatus accessions from the northwest plateau of Sichuan Province at germination stage. Chinese Journal of Grassland, 2017, 39(2):41-47.
[16]陈蕾太,孙爱清,杨敏,陈路路,马雪丽,李美玲,尹燕枰.逆境条件下小麦种子活力与种子萌发相关酶活性及其基因表达的关系.应用生态学报,2017,28(2):609-619.CHEN L T, SUN A Q, YANG M, CHEN L L, MA X L, LI M L, YIN Y P. Relationships of wheat seed vigor with enzyme activities and gene expression related to seed germination under stress conditions. Chinese Journal of Applied Ecology, 2017, 28(2):609-619.
[17]张国新,王秀萍,姚玉涛,薛志忠.主成分分析及隶属函数法对菊芋苗期耐盐性评价.安徽农业科学,2018(30):77-79.ZHANG G X, WANG X P, YAO Y T, XUE Z Z. Salt tolerance of Helianthus tuberosus L. seeding evaluated by principal component analysis and membership function method. Journal of Anhui Agricultural Sciences, 2018(30):77-79.
[18]贾蓉,庞妙甜,杜利霞,夏方山,朱慧森.5个苜蓿品种种子萌发期干旱耐受性研究.中国草地学报,2018, 40(5):114-119.JIA R, PANG M T, DU L X, XIA F S, ZHU H S. Study on drought tolerance of five alfalfa cultivars at germination stage. Chinese Journal of Grassland, 2018, 40(5):114-119.
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