| 陈园园,李凯,宋宇琴,李娜,李六林.PBO对‘玉露香梨’果实脱萼及品质的影响[J].中国南方果树,2018,47(5): |
| PBO对‘玉露香梨’果实脱萼及品质的影响 |
| Effects of PBO on Calyx Falling and Fruit Quality of |
| 投稿时间：2017-12-18 修订日期：2018-06-08 |
| DOI： |
| 中文关键词: ‘玉露香梨’ PBO 脱萼 品质 果实质地 |
| 英文关键词:‘Yuluxiangli’pear PBO Calyx-abscission rate Quality Texture characteristics |
| 基金项目:山西省重点研发计划一般项目（农业）（201703D221015-1）,（201703D221015-2） |
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| 中文摘要: |
| 【目的】‘玉露香梨’内在品质优,但其脱萼率低、萼端不规则突出、果面凸起影响其外观品质。为此,促进果实萼片脱落,改善其内外品质,是目前生产中急需解决的问题。【方法】以‘玉露香梨’为材料,于盛花期喷施不同浓度PBO,在调查坐果和脱萼的基础上,分析其对外观品质和内在品质的影响,并采用FTC质构仪分析质地品质。【结果】坐果率随喷施PBO浓度的增加逐渐降低,均显著低于对照；脱萼率随浓度的增加逐渐升高,均显著高于对照。‘玉露香梨’的单果重、纵横径及果形指数均随着喷施PBO浓度的增加呈现逐渐降低的趋势；除2000倍PBO外,其余处理的偏斜率均显著低于对照；果实表面的凸起程度均随PBO浓度的升高而降低,除2000倍外,其余处理的果面凸起程度均显著低于对照。随着喷施PBO浓度的升高,‘玉露香梨’的可溶性固形物含量呈先升高后降低的趋势,各处理均显著高于对照,其中1500倍最高,达12.58%。随着PBO浓度的升高,‘玉露香梨’果皮硬度、起始模量呈先增加后降低的趋势,咀嚼性显著高于对照,但果肉硬度、粘附性、弹性无显著变化。【结论】PBO促进玉露香梨萼片的脱落,其中1500倍PBO可有效改善其内外品质,同时保持其良好的果肉质地。 |
| 英文摘要: |
| Abstract:【Objective】'Yuluxiangli' pear intrinsic quality is excellent but the low calyx falling rate, irregular calyx prominence, the convex surface of the fruit effect the external quality. Therefore promoting calyx falling and accelerating fruit quality are urgent issues to be resolved in the production at present.【Method】The experiment was carried out on ‘Yuluxiangli’ pears with different concentrations of PBO in full-bloom stage. Based on the investigation of the fruit set and falling of calyx, the effect of PBO on internal and external quality was analyzed. Fruit texture was measured by the US FTC Texture analyzer.【Result】The result shows that the fruit-setting rate decreased with the increasing of PBO concentration, which was significantly lower than that of control. The rate of calyx falling was gradually increased with the increasing of concentration, which was significantly higher than that of the control. The fruit weights, verticals diameters, horizontal diameters and shape indexes had tended to decrease with the increasing of PBO concentration. Skew index was significantly lower than that of control except the concentrations of 2000 times. The level of protrusion decreased with the increasing of PBO concentration. Except the concentrations of 2000 times, the level of protrusion was significantly lower than that of control. With the increasing of PBO concentration, the soluble solids content of 'Yuluxiangli ' Pear had tended to increase first and decreased soon. The treatment groups were significantly higher than the control. The concentration of 1500 times was the highest, which was 12.58%. With the increasing of PBO concentration, the rind hardness and initial modulus of 'Yuluxiangli' pear had increased firstly and decreased soon. The chewiness was higher than the control. Pulp hardness, adhesion and flexibility had no significant difference between the treatment and the control.【Conclusion】PBO accelerate the calyx falling of ‘Yuluxiangli’ Pear, in which the concentrations of 1500 times improve its internal and external quality effectively while maintaining its good fleshy texture. |
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