光照强度与GA_3浓度对云烟99种子萌发的影响
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摘要
为云烟99烤烟新品种的推广应用提供参考,以云烟99种子为试验材料,采用室内培养皿发芽试验研究不同光照强度和GA_3浓度对云烟99种子萌发的影响。结果表明:适宜光照强度和GA_3浓度对云烟99烤烟种子的萌发有促进作用。在相同GA_3浓度下,除GA_3浓度为50mg/L处理的云烟99种子发芽势和发芽率随光照强度增加呈持续升高趋势外,其余GA_3浓度处理均随光照强度增加呈先升高后降低趋势,且在光照强度为3 700lx时达最大;发芽指数、烟苗长度及活力指数随光照强度增加均呈先升高后降低趋势,且多在光照强度为3 700lx时达最大;发芽时间随光照强度增加呈先降低后升高趋势,且在光照强度为3 700lx时最短。在相同光照强度下,云烟99种子的发芽率和发芽势以GA_3浓度为50mg/L和100mg/L处理最高;发芽指数、活力指数和烟苗长度以GA_3浓度为100 mg/L处理最高,发芽时间以GA_3浓度为50mg/L处理最短。不同光照强度对云烟99种子的发芽指数、发芽时间、苗长和活力指数的影响达极显著水平(P<0.01),对发芽势的影响达显著水平(P<0.05);不同GA_3浓度对云烟99种子发芽时间的影响达显著水平(P<0.05),对发芽势、发芽率、发芽指数、苗长和活力指数的影响达极显著水平(P<0.01);光照强度和GA_3浓度互作对云烟99苗长和活力指数的影响达极显著水平(P<0.01)。3 700lx光照强度和100mg/L GA_3浓度组合有利于云烟99烤烟种子萌发。
The effect of different light intensity and GA_3 concentration on seed germination of Yunyan99,a new tobacco variety,was studied by a Petri dish germination test to provide a reference for popularization and application of Yunyan 99. Results: The appropriate light intensity and GA_3 concentration can promote seed germination of Yunyan 99.The germination potential and rate of Yunyan99 seeds treated with different GA_3 concentration,except 50 mg/L GA_3 concentration,both present the first rising and then declining trend with increase of light intensity under the same GA_3 concentration and are the maximum when light intensity is 3 700 lx.The germination index,seedling height and vigor index all show the first rising and then declining trend with increase of light intensity and reach the maximum when light intensity is 3 700 lx.The germination time shows the first declining and then rising trend with increase of light intensity and is the shortest when light intensity is 3 700 lx.The germination rate and potential of Yunyan 99 seeds treated with 50mg/L and 100mg/L GA_3 are the highest under the same light intensity.The germination index,vigor index and seedling height of Yunyan 99 seeds treated with 100mg/L GA_3 are the highest but the germination time of Yunyan 99 seeds treated with 50mg/L GA_3 is the shortest.Different light intensity has the very significant effects on germination index and time,seedling height and vigor index of Yunyan 99 seeds and a significant effect on germination potential of Yunyan 99 seeds.Different GA_3 concentration has a significant effect on germination time of Yunyan 99 seeds and the very significant effects on germination potential,rate and index,seedling height and vigor index of Yunyan99 seeds.The interaction between light intensity and GA_3 concentration has the very significant effects on seedling height and vigor index of Yunyan 99.The combination of 3 700 lx light intensity and 100mg/L GA_3 concentration most benefits seed germination of Yunyan 99.
The effect of different light intensity and GA_3 concentration on seed germination of Yunyan99,a new tobacco variety,was studied by a Petri dish germination test to provide a reference for popularization and application of Yunyan 99. Results: The appropriate light intensity and GA_3 concentration can promote seed germination of Yunyan 99.The germination potential and rate of Yunyan99 seeds treated with different GA_3 concentration,except 50 mg/L GA_3 concentration,both present the first rising and then declining trend with increase of light intensity under the same GA_3 concentration and are the maximum when light intensity is 3 700 lx.The germination index,seedling height and vigor index all show the first rising and then declining trend with increase of light intensity and reach the maximum when light intensity is 3 700 lx.The germination time shows the first declining and then rising trend with increase of light intensity and is the shortest when light intensity is 3 700 lx.The germination rate and potential of Yunyan 99 seeds treated with 50mg/L and 100mg/L GA_3 are the highest under the same light intensity.The germination index,vigor index and seedling height of Yunyan 99 seeds treated with 100mg/L GA_3 are the highest but the germination time of Yunyan 99 seeds treated with 50mg/L GA_3 is the shortest.Different light intensity has the very significant effects on germination index and time,seedling height and vigor index of Yunyan 99 seeds and a significant effect on germination potential of Yunyan 99 seeds.Different GA_3 concentration has a significant effect on germination time of Yunyan 99 seeds and the very significant effects on germination potential,rate and index,seedling height and vigor index of Yunyan99 seeds.The interaction between light intensity and GA_3 concentration has the very significant effects on seedling height and vigor index of Yunyan 99.The combination of 3 700 lx light intensity and 100mg/L GA_3 concentration most benefits seed germination of Yunyan 99.
引文
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[12]坎平,王莎莎,马文广,等.赤霉素引发同时提高烟草种子及幼苗抗旱性和抗冷性[J].种子,2014(2):30-34,38.
[13]潘建菁,谢昌发,刘冬霞,等.三种药剂浸种对提高烟草种子活力的效应[J].种子科技,2004(3):36-37.
[14]刘启彤.赤霉素提高烤烟种子活力研究[D].长沙:湖南农业大学,2007.
[15]李永平.烟草种子学[M].北京:科学出版社,2007:162-163.
[16]HU J,ZHU Z Y,SONG W J.Effects of sand priming on germ-ination and field performance indirect sown rice(Oryza sativaL.)[J].Seed Science andTechnology,2005,33:243-248.
[2]招启柏,宋平,王广志,等.光、温、激素对烟草种子萌发和幼苗生长的影响[J].中国烟草学报,2001(4):31-34,48.
[3]宋碧清,郑昀晔,马文广,等.光照强度对光敏感型和光不敏感型烟草种子发芽的影响[J].中国烟草科学,2013(5):72-77.
[4]毛立彦,慕小倩,董改改.光照强度对曼陀罗和紫花曼陀罗生长发育的影响[J].植物生态学报,2012(3):243-252.
[5]闫兴富,刘建利,贝盏临,等.不同光强条件下柠条锦鸡儿的种子萌发和幼苗生长特征[J].生态学杂志,2015(4):912-918.
[6]郑蔚虹,齐恒玉,何俊莉.赤霉素对紫丁香种子萌发及幼苗生长的影响[J].林业科技,2004(4):4-6.
[7]钟希琼,王惠珍.高等植物赤霉素生物合成及其调节研究进展[J].植物学通报,2001,18(3):303-307.
[8]苏振华,徐秀红,苏珍.种子超干贮藏与种子引发的研究概述[J].现代农业科技,2007(17):130-133.
[9]JISHA K C,VIJAYAKUMARI K,PUTHUR J T.Seed priming for abiotic stress tolerance:an overview[J].Acta Physiol Plant,2013,35:1381-1396.
[10]AFZAL I,BASRA S M A,AHMAD N.Effect of priming and growth regulator treatments on emergence and seedling growth of hybrid maize(Zea mays L.)[J].Int J Agric Biol,2002,4(2):303-306.
[11]马文广,郑昀晔,索文龙,等.赤霉素引发处理提高烟草丸化种子活力和幼苗素质[J].浙江农业学报,2009,21(3):293-298.
[12]坎平,王莎莎,马文广,等.赤霉素引发同时提高烟草种子及幼苗抗旱性和抗冷性[J].种子,2014(2):30-34,38.
[13]潘建菁,谢昌发,刘冬霞,等.三种药剂浸种对提高烟草种子活力的效应[J].种子科技,2004(3):36-37.
[14]刘启彤.赤霉素提高烤烟种子活力研究[D].长沙:湖南农业大学,2007.
[15]李永平.烟草种子学[M].北京:科学出版社,2007:162-163.
[16]HU J,ZHU Z Y,SONG W J.Effects of sand priming on germ-ination and field performance indirect sown rice(Oryza sativaL.)[J].Seed Science andTechnology,2005,33:243-248.