外源H_(2)S对番茄双断根嫁接砧木及嫁接苗生长的影响  

Effects of Exogenous H_(2)S on Growth of Tomato Double-root-cutting Grafted Rootstocks and Seedlings

作　　者：吴帼秀 吴长江 董垚欣 牛旭旭 李阳 李严曼[1] 李胜利[1] WU Guoxiu;WU Changjiang;DONG Yaoxin;NIU Xuxu;LI Yang;LI Yanman;LI Shengli(College of Horticulture,Henan Agricultural University,Zhengzhou 450002,Henan,China)

机构地区：[1]河南农业大学园艺学院,河南郑州450002

出　　处：《中国蔬菜》2023年第3期65-72,共8页China Vegetables

基　　金：河南省大宗蔬菜产业技术体系项目(HARS-22-07-S);河南省高等学校重点科研项目(22A210020);河南省科技攻关项目(222102110307)。

摘　　要：为筛选出适宜番茄双断根嫁接砧木根系再生及嫁接苗生长的硫化氢(H_(2)S)浓度,以金钻为砧木,以粉都金冠王为接穗,研究不同浓度NaHS(0.1、0.2、0.3、0.4、0.5 mmol·L^(-1),H_(2)S供体)对双断根番茄砧木及嫁接苗生长、根系形态的影响。结果表明,0.2 mmol·L^(-1) NaHS处理的断根番茄砧木株高、茎粗、叶面积、单株鲜质量和干质量、再生根系活力均达到最大值,且显著提高了砧木内源H_(2)S含量及D-半胱氨酸脱巯基酶(DCD)活性;亦显著促进了双断根嫁接苗的生长及根系发育。In order to select proper concentration of hydrogen sulfide(H_(2)S)suitable for root regeneration and growth of double-root-cutting grafted tomato seedling,this paper took‘Jinzuan’as rootstock and‘Fendujinguanwang’as scion;and studied the effects of different concentrations of NaHS(0.1,0.2,0.3,0.4,0.5 mmol·L^(-1),donor of H_(2)S)solutions on growth and root system morphology of tomato double-rootcutting grafted rootstocks and seedlings.The results showed that seedlings treated with 0.2 mmol·L^(-1) NaHS all reached the maximum value in plant height,stem diameter,leaf area,dry and fresh single plant weight and regenerative root activity of root-cutting rootstocks;and also significantly increased the endogenous H_(2)S content,activity of D-cysteine desulfhydrase(DCD)of rootstock.Meanwhile,0.2 mmol·L^(-1) NaHS could notably promote the growth and root system development of double-root-broken tomato grafted seedlings.

关 键 词：番茄 H_(2)S 双断根嫁接 生长 根系发育 

分 类 号：S641.2[农业科学—蔬菜学]