摘要
为明确保水剂的保水效果及其对不同烤烟品种生长发育的生理调节机制,采用盆栽试验,以抗旱性强的豫烟6号和抗旱性弱的豫烟10号为材料,研究了中度干旱条件下不同种类保水剂对不同烤烟品种农艺性状、根系活力、叶片抗氧化酶活性、丙二醛含量和脯氨酸含量的影响。结果表明:1施用保水剂增加了烤烟的株高、茎围、有效叶片数和最大叶面积,提高了烟株根系活力,尤其是对豫烟10号的促进作用效果更显著;2施用保水剂降低了烤烟的超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性,但对两个烤烟品种的作用效果不同;3施用保水剂降低了烤烟的丙二醛含量,且对豫烟10号的促进作用效果更显著;4干旱条件下,施用保水剂降低了烤烟的脯氨酸含量,豫烟6号的脯氨酸含量降幅大于豫烟10号。因此,施用保水剂有利于提高豫烟10号对干旱胁迫的适应性,其中以改性淀粉、丙烯腈和丙烯酰胺为原料制备的含钾高分子吸水材料保水剂对烤烟生长发育和生理代谢的调控能力优于聚丙烯酸钠保水剂。
To investigate water retention effects and physiological regulation mechanism of water retaining agents on the growth and development of different flue-cured tobacco varieties,a pot experiment was conducted to study the effects of different water retaining agents on the agronomic traits,root vigor,antioxidant enzyme activity in leaves,malondialdehyde（MDA） content and proline content of two flue-cured tobacco varieties（Yuyan 6 with strong drought resistance and Yuyan 10 with weak drought resistance）under moderate drought conditions. The results showed that：1） The application of water retaining agents increased plant height,stalk circumference,leaf number and maximum leaf area of the flue-cured tobacco,and promoted the root vigor of tobacco; especially for Yuyan 10. 2） Water retaining agents decreased the activities of superoxide dismutase（SOD）,peroxidase（POD） and catalase（CAT） in the flue-cured tobacco,however their effects on the two varieties differed. 3） Water retaining agents reduced the MDA content in the flue-cured tobacco,especially inYuyan 10. 4） Water retaining agents reduced the proline content in the flue-cured tobacco under drought condition,and the proline content decreased more obviously in Yuyan 6 than in Yuyan 10. Therefore,the application of water retaining agent promoted the adaptability of Yuyan 10 to drought stress. The regulation ability of water retaining agent B（polymer absorbent material containing potassium,prepared by using modified starch,acrylonitrile and acrylamide as raw materials） on the growth and physiological metabolism of the flue-cured tobacco was better than that of water retaining agent A（sodium polyacrylate）.
作者
陈芳泉
邵惠芳
王凯悦
许自成
黄五星
范艺宽
张慢慢
CHEN Fangquan SHAO Huifang WANG Kaiyue XU Zicheng HUANG Wuxing FAN Yikuan ZHANG Manman(College of Tobacco Science, Henan Agricultural University, Zhengzhou 450002, China Henan Provincial Tobacco Company, Zhengzhou 450008, China)
出处
《烟草科技》
EI
CAS
CSCD
北大核心
2017年第3期31-38,共8页
Tobacco Science & Technology
基金
河南省烟草公司科技攻关项目"河南主产烟区主栽烤烟品种综合评价"(HYKJ 201405)
关键词
烤烟
品种
抗旱性
豫烟6号
豫烟10号
生长发育
生理特性
保水剂
Flue-cured tobacco
Variety
Drought resistance
Yuyan 6
Yuyan 10
Growth
Physiological characteristic
Water retaining agent
