贮藏温度和贮藏时间对垂柳种子生活力的影响
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摘要
以成熟的垂柳种子为材料,测定了不同贮藏温度和不同贮藏时间下垂柳种子发芽率、发芽势、活力指数等生活力指标的变化,以探索贮藏温度和贮藏时间对垂柳种子生活力的影响。结果表明:适当的低温-10℃、-5℃、4℃可以延缓垂柳种子的劣变,延长其贮藏时间;常温20℃与极低温-20℃条件下会降低种子的生活力,表现为活力指数降低;随贮藏天数的增加,发芽率、发芽势、发芽指数表现出先升高后降低的趋势,发芽速则是先降低后升高。常温20℃贮藏7天种子发芽率显著下降,在-5℃贮藏3天的条件下种子生活力最强,可应用于垂柳种子萌发及人工种苗培育的实践中。
In this paper, the mature weeping willow seeds were used as materials to determine the changes in viability indices such as germination rate, germination energy, and vigor index of weeping willows at different storage temperatures and different storage times in order to explore the effect of storage temperature and storage time on the viability of weeping willow seeds. The results showed that low temperatures of-10°C,-5°C, and 4°C could delay the deterioration of weeping willow seeds and prolong its storage time. Under normal temperature of 20 °C and low temperature of-20 °C, the viability of seeds was reduced and the vigor index was decreased. With the increase of storage days, the germination rate, germination potential, and germination index showed a trend of increasing first and then decreasing, and the germination rate decreased first and then increased. The germination rate of seeds decreased significantly under the conditions of-20°C storage for 3 days,the seeds had the strongest viability under the conditions of-5°C storage for 3 days, and could be applied to the seed germination of weeping willow and artificial seedlings breeding practice.
In this paper, the mature weeping willow seeds were used as materials to determine the changes in viability indices such as germination rate, germination energy, and vigor index of weeping willows at different storage temperatures and different storage times in order to explore the effect of storage temperature and storage time on the viability of weeping willow seeds. The results showed that low temperatures of-10°C,-5°C, and 4°C could delay the deterioration of weeping willow seeds and prolong its storage time. Under normal temperature of 20 °C and low temperature of-20 °C, the viability of seeds was reduced and the vigor index was decreased. With the increase of storage days, the germination rate, germination potential, and germination index showed a trend of increasing first and then decreasing, and the germination rate decreased first and then increased. The germination rate of seeds decreased significantly under the conditions of-20°C storage for 3 days,the seeds had the strongest viability under the conditions of-5°C storage for 3 days, and could be applied to the seed germination of weeping willow and artificial seedlings breeding practice.
引文
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[3]单立华.金丝垂柳扦插繁殖及苗期管理技术[J].辽宁林业科技,1998,(06):60.
[4]羊玉梅,金光银.垂柳苗木培育技术及在城乡绿化中的应用[J].生物技术世界,2015,(04):25.
[5]段树国.柳树的扦插育苗方法与造林技术研究[J].农业与技术,2018,38(08):171.
[6]王雯雯.柳树水培扦插对水体重金属污染修复作用研究[D].南京大学,2017.
[7]张秀芝,路静.柳树的扦插育苗和造林技术[J].吉林农业,2017,(12):92.
[8]旺加.竹柳树的栽种前景及栽培技术[J].西藏科技,2017,(02):73-74.
[9]韩超,王伶利,郝晓雷.柳树的育苗技术要点[J].吉林农业,2016,(02):113.
[10]刘平.垂柳繁殖方法几点改进的初结[J].吉林林业科技,1979,(03):92-94.
[11]赵秀芳.超低温贮藏柳树种子的研究[J].种子,2009,28(01):88-90.
[12]张舒梦,王勇锋,张超,杨国玉,雒盼妮,孙风丽,刘曙东,奚亚军.不同贮藏温度对柳枝稷种子萌发的影响[J].西北农业学报,2017,26(03):355-362.
[13]毕波,陈强,常恩福,李品荣,尹艾萍.贮藏温度对川滇桤木种子发芽能力的影响[J].林业科技开发,2005,(03):23-26.
[14]董新红,宋明.种子寿命研究进展[J].生物学杂志,2001,(6):7-9.
[15]Ellis R H,Barrett S,Alternating temperatures and rate of seed germination in lentil[J].Annals of Botany,1994,74(5):519-524.
[16]Abdul-Ba ki A.A.Biochemical aspects o f seed vigor[J].Hort Science,1980,15:765-771.
[17]曹帮华,吴丽云,杨娟.低温预处理对刺槐种子活力和幼苗生长的影响[J].山东科学,2005,(4):48-51.
[18]席沁,赵廷宁,张成梁.若干种子处理方法对偃松种子生活力的影响[J].植物科学学报,2014,32(4):427-433.
[19]张丽,张露,胡松竹.贮藏方法对不同种源毛红椿种子发芽能力的影响[J].林业科技开发,2007,21(4):114-116.