源库调节对厚皮甜瓜植株生长和抗氧化特性及果实产量品质的影响  

Effects of Source-Sink Regulation on Plant Growth,Leaf Antioxidative Characteristics,Yield and Quality of Muskmelon

作　　者：范伯圣[1] 蒋芳玲[1] 王旭[1] 胡根金 王东 吴震[1] 

机构地区：[1]南京农业大学园艺学院,农业部华东地区园艺作物生物学与种质创制重点实验室,南京210095 [2]南京军区农业新技术试验培训基地,南京211812

出　　处：《西北植物学报》2013年第4期741-746,共6页Acta Botanica Boreali-Occidentalia Sinica

基　　金：江苏高校优势学科建设工程项目-现代园艺科学;国家科技支撑项目(2008BAD96B05);江苏省农业三项工程项目[XS(2008)ZS20];江苏省科技支撑项目(BE2009403)

摘　　要：以厚皮甜瓜品种‘中甜1号’为材料,设V1F2(主蔓顶部留1条顶蔓+单株留2果,下略)、V2F2、V3F2、V1F3、V2F3、V3F3共6个处理,以不留顶蔓、每株只留1果为对照,以研究源库关系中主蔓顶部留蔓数和单株留果数对厚皮甜瓜植株生长、叶片抗氧化特性及果实产量和品质的影响。结果显示:(1)随生育期的延长,增加单株留果数使厚皮甜瓜植株茎粗、节间长、最大功能叶长明显受到抑制,而顶蔓数量对上述3项生长指标无显著影响。(2)留2个果时,叶片O2.-产生速率略低于CK,MDA含量高于CK;留3个果时,叶片中O2.-产生速率和MDA含量最高;在所有处理中,以留果2个的POD活性最低,以留果3个的SOD活性最低。(3)每株留2果时,增加顶蔓数能提高果实品质,而每株留3果同时增加顶蔓数时,果实品质下降,尤以第3果品质最差。研究表明:留果数量对厚皮甜瓜植株生长和叶片抗氧化性影响大于留顶蔓数量,每株留2蔓2果有利于植株生长,可增强叶片抗氧化能力,延缓叶片衰老,从而提高单株产量,改善果实品质。The muskmelon cultivars, ＇ Zhongtian No. 1 ＇ was used to investigate effects of number of top vine and fruit on plant growth,leaf antioxidative characteristics, yield and quality of muskmelon. The six treat ments are as follows ：V1F2 ,V2F2,V3F2,VIF3,V2F3,V3F3,one fruit without top vine was set as CK. The results revealed that：（1） Increased fruit number leads to inhibited growth in muskmelon plant, which was seen in stem diameter,average node length and functional leaf length; （2）O production rate and MDA content was higher with two fruits than that with three fruiis,while O production rate was lower than that of CK and MDA higher than that of CK;SOD activity in V2F2 was higher than that in CK and other treat ments,and a minimum was seen in V3F3. POD activity in V2F2 was lower than that in CK and other treatments,and a maximum was seen in V3F3; （3）Increased side vines with 2 fruits per plant led to improved fruit quality while a worse quality was seen with 3 fruit setting per plant. In this study,V2F2 was favorablefor plant growth, antioxidative capability enhancement, leaf senescence delay, and consequently, increased perplant yield and improved fruit quality.

关 键 词：厚皮甜瓜 顶蔓 留果数 生长 抗氧化特性 产量和品质 

分 类 号：Q945.79[生物学—植物学]