排序方式: 共有61条查询结果,搜索用时 15 毫秒
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寒富苹果特异性状评价 总被引:4,自引:1,他引:4
以寒富苹果及其亲本为试材,采用田间调查、荧光显微观察、解剖特征分析和相关生理生化指标测定相结合的方法,对寒富苹果的树体发育状况和器官组织结构进行了系统研究,综合评价其特异性状。结果表明,寒富苹果叶片的栅栏组织较厚,叶片厚度、叶脉突起度、枝条皮部比率均大于亲本。树体的短枝比率、1a生枝的粗度和节数均较高,具有明显的短枝特征;自花授粉后,花粉管能顺利进入子房,并能够正常坐果,形成种子,具有较强的自交亲和能力;腋花芽结果能力较强,主要集中分布于第21~29节和35~39节;果实的角质层较厚,果皮、果肉细胞较小,排列紧密,耐贮性较强;人工低温处理后,枝条的相对电导率、MDA质量摩尔浓度、SOD酶活性和POD酶活性均反映出寒富苹果具有较强的抗寒性。因此,寒富苹果为短枝性状明显、自交亲和、腋花芽结果能力、耐贮性和抗寒性均较强的多性状聚合特异性苹果品种。 相似文献
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Requirements of consumers for products with low residues of pesticides have increased the need for alternative disease management practices. The concentration of boron in fruit affects its quality, shelf life and the development of physiological disorders. However, the effect of boron on the susceptibility of peach to fruit rots has not been reported. This study investigated the effect of boron (Power B and Borax) on the development of Monilinia laxa on peaches (cv Andross). Mycelial growth of M. laxa was inhibited on potato dextrose agar supplemented with 750 μg ml−1 of Borax or 1000 μg ml−1 of Power B. The EC 50 values were 107.9 and 522.4 for Borax and Power B respectively. Field investigations showed that the incidence of peach infections by M. laxa was negatively correlated with the content of Boron in the leaves. Post-harvest dipping of peaches in Power B or Borax solution, at concentrations recommended by manufacturer (2 μg ml−1 for Power B and 1 mg ml−1 for Borax), significantly reduced the development of M. laxa. Power B, at rates of 6 μg ml−1, and Borax at rates of 3 mg ml−1 were the most effective in reducing infections by M. laxa. Finally, post-harvest dipping of fruit in Power B or Borax reduced losses of fruit weight and improved fruit firmness one month after storage, showing that boron increased the maintainability of peaches in cold storage. Peaches treated with 6 μg ml−1 Power B or 3 mg ml−1 Borax had the highest flesh firmness and the lowest water losses, while untreated control peaches were the least firm. Generally, Borax was significantly less effective than Power B, but better than the control treatment. 相似文献
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以春丰迷你冬瓜果实为试材,研究不同采收成熟度及贮藏环境对迷你冬瓜果实贮藏期间品质
的影响。结果表明,低成熟度的果实虽采收时营养价值高,但不耐贮藏,贮藏3 d 后果皮即出现皱缩现象;
高成熟度的果实耐贮性好,贮藏100 d 后外观仍保持良好,且在地下室环境中贮藏能延缓果实品质下降的
速度;在冷藏环境下各成熟度的果实贮藏20 d 后出现腐烂症状。分析认为:短期贮藏可选择花后15 d 的
嫩瓜冷藏;长期贮藏则应选择花后30 d 或45 d 的老熟瓜在地下室相对低温的环境中贮藏。 相似文献
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嫁接对薄皮甜瓜果实耐贮性和贮藏期间主要品质的影响 总被引:5,自引:1,他引:5
以玉美人薄皮甜瓜为试材,研究了嫁接对薄皮甜瓜耐贮性和贮藏期主要品质的影响。结果表明,在贮藏初期,嫁接果实发生缓慢的后熟作用,在贮藏后第4天才出现乙烯高峰,较自根果实推迟了2 d;脂氧合酶(LOX)活性变化与乙烯变化趋势一致。贮藏6 d以后,嫁接和自根果实的乙烯释放量和酶活性均降低。在贮藏初期,嫁接果实淀粉含量和果实硬度大于自根,果实失重率和含水量与自根相差不大,但在贮藏6 d后,含水量降低,失重率提高。贮藏期间,嫁接果实可溶性固形物和Vc含量低于自根,而有机酸含量始终高于自根。 相似文献
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