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叶面喷施Ca( NO3) 2 和GA 对‘糯米糍’荔枝裂果的影响 总被引：7，自引：1，他引：7
以果实易裂品种‘糯米糍’荔枝为材料, 研究叶面喷施Ca (NO3) 2 和GA 处理对其裂果的影响。结果表明: Ca (NO3) 2和GA 处理均能使裂果率明显降低。果实发育初期, 果皮中原果胶和水溶性果胶的含量均有所升高, 且原果胶含量的增高幅度明显; 随着果实的成熟, 可溶性果胶含量有所降低, 原果胶含量大幅度提高。此外, 除果实成熟期外, 果皮内果胶脂酶(PE) 和多聚半乳糖醛酸酶(PG) 的活性一直有上升趋势, 且PG的活性与水溶性果胶的含量有极显著正相关, 而纤维素酶(CX) 在整个果实发育期都表现出较高的活性且有两次明显的高峰。 相似文献
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《中国果树》2019,(2)
研究了在不同货架温度下,14 d货架期内‘南果梨’软化及果皮颜色变化情况,为货架期‘南果梨’品质维持提供技术方法。分别于货架期0、3、6、9、12、14 d测定5、10、20、25℃4个货架温度下‘南果梨’果实硬度、可溶性果胶含量、原果胶含量、纤维素含量、木质素含量、果皮色差值(L*、a*、b*、h°),并作相关性分析。结果表明,货架温度越低,‘南果梨’果实硬度和可溶性果胶、原果胶、纤维素、木质素含量下降越慢,果皮颜色转黄速率降低,且果实硬度与各指标均存在显著相关性。建议准备市售‘南果梨’可先置于20℃或25℃温度下6 d左右进行果实后熟,再转移至4℃或10℃冷柜销售,可延缓果实硬度下降,提高果实品质,大大延长‘南果梨’的销售时间。 相似文献
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研究了温州蜜柑不同枯水级别果实的物理性状、内在品质、果胶类物质及细胞壁水解酶活性。结果表明,随枯水级别增加,果汁率明显降低,果实失重率和果皮率增加;果实中总糖、总酸、维生素C含量明显降低,乙醇含量则先增加后降低,枯水1级时,乙醇含量最高,可作为预测枯水发生的生理指标;随枯水级别增加,丙二醛含量显著增加,果皮中原果胶和可溶性果胶含量显著降低,果肉中原果胶含量显著降低,而可溶性果胶含量明显增加,果皮和果肉中多聚半乳糖醛酸酶(PG)和纤维素酶(Cx)活性呈增加趋势;在果实贮藏期采取降低细胞壁水解酶活性等是减轻果实枯水的重要措施。 相似文献
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Citrus creasing results in serious economic loss in many citrus orchards. Based on the different incidence of creasing, two sweet orange cultivars ‘Hong Jiang’ (grafting chimaera of which flesh is mostly from Citrus reticulata Blanco and peel is from Citrus sinensis Osbeck in) and ‘An Liu’ (Citrus sinensis Osbeck) were used to investigate the creasing rate. The ultrastructure in cellular wall, cellular wall component, cellular wall degradation-related enzymes and expansin (Ct-Exp1) of sweet orange during fruit ripening in field were comparatively analyzed. ‘Hong Jiang’ sweet orange had a higher creasing rate than ‘An Liu’ during ripening. The activities of polygalacturonase, cellulase and pectinesterase in cellular wall of ‘Hong Jiang’ increased more markedly compared with ‘An Liu’. The increases in the content of soluble pectin, ionically associated pectin, covalently bound pectin, hemicellulose and cellulose of ‘Hong Jiang’ were higher than those of ‘An Liu’. Furthermore, the enhanced degradation of the ultrastructure in the albedo cellular walls was observed in ‘Hong Jiang’. Moreover, the northern blot analysis indicated that the Ct-Exp1 gene expressed more strongly in peel of ‘Hong Jiang’ than ‘An Liu’ during fruit ripening. These data suggest that enhanced loss of pectin and cellulose in the cellular walls of peel tissue of sweet orange could result in fruit creasing. 相似文献
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磷酸二氢钾对脐橙陷痕果发生及果皮细胞壁代谢的影响 总被引：1，自引：0，他引：1
研究‘卡拉卡拉’（Citrus sinensis Osbeck‘Cara Cara’）和‘纽荷尔’（Citrus sinensis Osbeck ‘Newhall’）脐橙果实膨大期叶面喷施钾肥（0.2% KH2PO4）后,成熟期陷痕果发生率、果皮细胞壁物质成分、细胞壁代谢相关酶活性的变化规律及其关系。结果表明,KH2PO4处理对卡拉卡拉脐橙和纽荷尔脐橙的果皮厚度、硬度及其均匀度有不同程度的影响,卡拉卡拉脐橙的陷痕果发生率显著降低。纽荷尔脐橙的细胞壁代谢以及果皮力学性能受KH2PO4的影响较小,陷痕果率无显著变化。果皮果胶酶、纤维素酶、木聚糖酶、过氧化物酶活性的降低可以减缓果皮原果胶、纤维素和半纤维素成分的降解,降低果实成熟过程中果皮软化的速度,减少陷痕果的发生。 相似文献
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纽荷尔和清家脐橙果实大量矿质营养元素含量与累积变化 总被引：2，自引：0，他引：2
在重庆北碚,以30年生枳砧清家脐橙和纽荷尔脐橙为材料,分析果实生长发育过程中N、P、K、Ca、Mg和S等6种大量营养元素含量和累积量变化。结果表明,果实生长发育过程中,纽荷尔和清家果实中N、P、Mg和S含量4月最高,Ca在10月最高,纽荷尔和清家K含量分别在9月和7月最高;Ca的主要累积时期,纽荷尔脐橙果实为6—7月和9—10月,清家脐橙果实为6月、8月和10月;除Ca外的其他大量矿质营养元素累积量较大的时期,纽荷尔和清家脐橙果实的总体上均为6—9月和11月,但清家脐橙累积最高峰一致出现在6月,纽荷尔脐橙累积最高峰至少推迟1个月左右。 相似文献
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不同柑橘砧木对锦橙果实品质的影响 总被引：5，自引：0，他引：5
2006—2008年连续3年研究11种砧木对铜水72-1锦橙果实品质的影响。结果表明：不同砧木对果实颜色和内在品质均有影响,其中以卡里佐枳橙为砧的果实亮度最好,黄色度值最高,果实最大,果皮最薄;以路比枳为砧的果实红色度值和固酸比（TSS/TA）最高,果皮最厚;以沃尔卡姆为砧的亮度最差,黄色度值、单果质量和可食率最低,中心柱最小;以C35枳橙为砧的中心柱最大且维生素C含量最低;以光皮酸橙为砧的果实红色度最低而可食率最高;以里其16-6枳为砧的果实可溶性固形物（TSS）含量最高;以孙楚沙橘为砧的果实可滴定酸（TA）和维生素C含量最高,而TSS/TA最低;果实TSS和TA最低的砧木为枸头橙。品质综合评价,性状表现较好的为孙楚沙橘、卡里佐枳橙和C35枳橙,而表现较差的为兰普莱檬和沃尔卡姆柠檬。 相似文献
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Syed Bilal Hussain Muhammad Akbar Anjum Sajjad Hussain Shaghef Ejaz Maqsood Ahmed 《Erwerbs-Obstbau》2017,59(4):315-324
Sweet oranges are produced on large scale all over the world and demanded due to less number of seeds and are better juice quality. A study was carried out with the objective to characterize promising sweet orange cultivars for better quality fruits production under different agro-climatic conditions of Punjab (Pakistan). Fruits of three promising sweet orange (Citrus sinensis L. Osbeck) cultivars viz. ‘Blood Red’, ‘Musambi’ and were harvested from commercial citrus groves at five different locations. Starting from Multan, in the direction of increasing altitude, four more sites viz. Sahiwal, Faisalabad, Sargodha and Chakwal were selected after every 100–150?km distance. Fruits were evaluated in terms of different physical and biochemical characters. Results showed significant influence of climatic conditions on physico-chemical properties of the cultivars at all the locations. Fruits harvested from Multan and Sahiwal showed higher fruit weight, diameter and peel weight. More juicy fruits with higher vitamin C content were produced under mild temperature environmental conditions of Chakwal. Overall, ‘Musambi’ fruits had more total soluble solids and reducing and total sugars. ‘Musambi’ was found to be good source of bioactive compounds i.?e. vitamin C and total phenolic content, had the maximum antioxidant activity as compared to ‘Blood Red’ and ‘Succari’ and may be explored as potential cultivar in Sargodha and Chakwal. 相似文献
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The consumption of dietary fibre plays an important role in the prevention of diseases, such as constipation, haemorrhoids. Recently, chemical and physical properties of citrus fibres have been widely studied. In this paper, the polygalacturonase (PG) and cellulase (Cx) gene expression of Cara Cara (Citrus sinensis (L.) Osbeck) navel orange fruit stored on tree (ST) was compared with fruit stored in room (SR). The results showed that the mRNA expression levels of PG increased significantly in the fruits of ST, in contrast, the expression levels of Cx increased slightly only in peel of ST. Total pectin (TP) and protopectin of ST fruits pulp were higher than those of SR at every time point. The contents of insoluble dietary fibre (IDF), hemicellulose (HC), cellulose (CEL) and lignin of ST fruits were less than that in SR. However, in fruits from ST, a significant increase of soluble dietary fibre (SDF) and water soluble pectin (WSP) occurred, compared with fruits of SR. Our studies indicated that fruit stored on tree is quite useful for regulating the gene expression and controlling contents of dietary fibre on Cara Cara navel orange. 相似文献
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滴灌施肥对‘特罗维它’甜橙生长结果的影响 总被引：5，自引：0，他引：5
以卡里佐枳橙砧‘特罗维它’甜橙为材料,以每年撒施10次肥料为对照,研究了年施肥总量一定,不同滴灌施肥频率（每年4次、10次和16次）对树体生长、产量和品质的影响。2002—2007年的结果显示,仅个别年份的处理与对照的树干粗度、树高和冠径存在显著差异以外,到试验结束时,不同滴灌施肥频率对树干粗度、树高和冠径大小无显著影响,滴灌施肥与对照间的树体生长无显著差异。滴灌施肥可显著提高果实产量,处理的累计产量比对照高29.4% ~ 36.5%;增加滴灌施肥频率无显著增产作用;滴灌施肥对果实品质无显著影响。建议碱性紫色土柑橘园滴灌施肥频率为每年4次。 相似文献
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几种砧木对哈姆林甜橙植株生长、产量及果实品质的影响 总被引：7，自引：1，他引：6
以7种不同砧木的8年生哈姆林甜橙为试材,对植株营养生长、产量和果实品质进行了比较。结果表明,不同砧木对哈姆林甜橙生长和产量有不同影响,其中以卡里佐枳橙为砧的植株树冠体积最大,以光皮酸橘、枸头橙和李齐16-6枳为砧的植株树冠体积较小,单位树冠体积产量以光皮酸橘为砧的植株最高,单株挂果数则以李齐16-6枳和卡里佐枳橙为砧的最多。不同砧木对果实品质有显著影响,其中以光皮酸橘为砧的果实体积和单果质量最大,以兰普来檬为砧的果汁含量最高,以李齐16-6枳和卡里佐枳橙为砧的果实可溶性固形物(TSS)含量最高,以李齐16-6枳为砧的果实可滴定酸含量亦最高,而李齐16-6枳和兰普来檬为砧的果实维生素C含量最高。从外观品质看,枸头橙为砧的果实油斑病发生程度最高。综合评价认为,以卡里佐枳橙、李齐16-6枳为砧的单株具产量高、果汁TSS含量高和风味浓郁等优点,是哈姆林甜橙较为理想的砧木。 相似文献
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纽荷尔脐橙缺硼表现与其硼、糖含量年变化的关系 总被引：13，自引：4，他引：13
研究了赣南‘纽荷尔’和‘朋娜’脐橙果实及叶片的硼和可溶性糖含量的年变化。结果表明: 幼果期两品种果皮硼含量均较高, 之后果皮与果肉硼含量均趋下降, 但在果实膨大中后期均出现显著上升。纽荷尔越冬老叶硼含量趋明显下降并居较低水平, 而朋娜老叶硼含量变幅小且相对较高。果实膨大中后期两品种果皮和果肉的可溶性糖含量均与果实硼含量出现同步积累, 此时二者老叶和朋娜春梢叶的糖含量均出现低谷, 而对应纽荷尔春梢叶糖含量并无明显下降。 相似文献