摘要
对6年生‘富士’苹果秋季技展下土施20 g(15%)多效唑,其果皮、果肉、果心各部中N,P,K,Ca,Mg,B,Mn 含量均比对照增加5.8%～57.8%(除果心部 N 含量降低6%);果肉中脯氨酸、蛋氨酸、丙氨酸和天门冬氨酸含量也显著增加。无论是刚采收的或是经5个月普通冷藏后的,其硬度、可滴定酸、总糖、可溶性固形物、蔗糖均显著高于对照。对果实采后的贮藏特性观察表明,处理果的耐藏性和抗逆性明显增强。
Soil applying 20g 15% wettable paclobutrazol(PP333)to 6-year-old ‘fuji’apple tree in autumn,compared apple,nutrient elements(N,P,K,Ca,Mg,B, Mn)concentration in fruit peel,fleshand core were all increased by 5.8%～57.8%, except N Concentration in core decreasing by 6%.Amino acids in treated fruit were increased,especially for proline,methionine,sucrose,and alanine.Firmness, soluble solids,total sugar content,sucrose,and titra-table acid content in treated fruits were 88.34N,15.30%,13.73%,4.32%and 0.225%while ripening,after 5 months storage,those were 79.88N,14.47%,14.18%,2.795and 0.141%,respeetively,which were all significantly higher than those of untreated fruits. ‘Fuji’apple has good keeping-quality for storage and longer shel life.Soil applying PP333 could further increase the fruit's keeping-quality for storage, and decrease the rate of peel-shinkage and lengthen shelf life,but it couldn't inhabit weight loss of fruit at shelf time.Cell membrane conductivity was sig- nificantly(1% level)lower than that of untreated fruit after 5 months sto- rage,and relative conductivity of its flesh cell was 38.32%,while the relative conductivities of untreated fruit and peel-shrinkage fruit were 44.47% and 47.98%,respectively.Changes of ethylene-releasing amount and firmess of trea- ted fruit to freezing injury were all less than those of untreated that PP333 treatment could increase fruit resistance to stress condition.
关键词
苹果
多效唑
品质
耐藏性
富士苹果
apple
PP333
fruit quality
keeping-quality for storage
