摘要
为了研究叶面喷施螯合钙(EDTTi-Ca)对石榴(Punica granatum L.)果实品质和开裂的影响,从而提高石榴果实的品质。本研究在2019年和2020年对突尼斯软籽石榴叶面喷施不同浓度的EDTTi-Ca,分别为螯合钙1(EDTTi-Ca 1)(稀释1000倍)、螯合钙2(EDTTi-Ca 2)(稀释500倍),每季喷施两次,并测定石榴叶片中的常量和微量元素浓度、果实物理和化学特性。结果显示,与对照相比,叶面施用EDTTi-Ca 2仅在2019年显著提高了石榴叶片的钙(Ca)含量(1.95±0.12 vs 2.20±0.17,P<0.05),其原因可能是2019年施用的EDTTi-Ca 2已使叶片中Ca含量达到饱和状态。另外,叶片中氮(N)、磷(P)、钾(K)、铁(Fe)、锌(Zn)、锰(Mn)的含量则不受任何叶面Ca肥处理的影响(P>0.05)。在两个年份叶面施Ca对石榴果实单株产量、单株果实数和果重均无显著影响(P>0.05)。与对照相比,在两个年份叶面施用EDTTi-Ca 2均减少了果实裂果率(2019:5.67±0.74 vs 2.72±0.36,P<0.05;2020:6.75±0.88 vs 3.44±0.45,P<0.05),提高了果汁总可溶性固形物(total soluble solids,TSS)(2019:16.94±1.49 vs 17.91±1.57,P<0.05;2020:17.39±1.53 vs 18.32±1.61,P<0.05)。另外,与对照相比,叶面施用EDTTi-Ca 2在2019年份显著提高了果汁总可溶性固形物/可滴定酸(total soluble solids/titratable acids,TSS/TA)(8.96±0.76 vs 10.66±0.90,P<0.05),降低了果汁中总酚类化合物含量(429.18±23.93 vs 414.34±23.54,P<0.05)。然而,叶面施用EDTTi-Ca未影响两个年份的石榴果皮的厚度、果汁pH值、可滴定酸(titratable acids,TA)、总糖、抗氧化活性和总花青素(P>0.05)。本研究表明,叶片喷施合适剂量的EDTTi-Ca可提高了石榴叶片的Ca含量、减少了石榴果实裂果率、提高了石榴果汁TSS和TSS/TA、降低石榴果汁中总酚类化合物含量。
In order to investigate the effect of foliar spraying of chelated calcium(EDTTi-Ca)on the quality and cracking of pomegranate fruit,so as to improve the quality of pomegranate fruit.In this study,different concentrations of EDTTi-Ca were sprayed on the surface of Tunisian soft-seed pomegranate(Punica Granatum L.)in 2019 and 2020,namelyEDTTi-Ca 1(diluted 1000 times)and EDTTi-Ca 2(diluted 500 times),sprayed twice a season,and the macro and trace element concentrations,fruit physical and chemical properties in pomegranate leaves were determined.The results showed that compared with the control,foliar application of EDTTi-Ca 2 only significantly increased the Ca content of pomegranate leaves in 2019(1.95±0.12 vs 2.20±0.17,P<0.05),the reason may be that the EDTTi-Ca 2 applied in 2019 has caused the Ca content in leaves to reach saturation.In addition,the contents of N,P,K,Fe,Zn,and Mn in the leaves were not affected by any foliar calcium fertilizer treatment(P>0.05).There was no significant effect of foliar calcium application on pomegranate fruit yield per plant,fruit number per plant and fruit weight in two years(P>0.05).Compared with the control,foliar application of EDTTi-Ca 2 in both years reduced the fruit cracking rate(2019:5.67±0.74 vs 2.72±0.36,P<0.05;2020:6.75±0.88 vs 3.44±0.45,P<0.05),improved juice total soluble solids(TSS)(2019:16.94±1.49 vs 17.91±1.57,P<0.05;2020:17.39±1.53 vs 18.32±1.61,P<0.05).In addition,foliar application of EDTTi-Ca 2 significantly increased fruit juice total soluble solids/titratable acids(TSS/TA)in 2019 compared with control(8.96±0.76 vs 10.66±0.90,P<0.05),decreased the content of total phenolic compounds in fruit juice(429.18±23.93 vs 414.34±23.54,P<0.05).However,foliar application of EDTTi-Ca did not affect pomegranate peel thickness,juice pH,TA,total sugar,antioxidant activity and total anthocyanins in both years(P>0.05).This study showed that spraying appropriate dose of EDTTi-Ca could increase the Ca content of pomegranate leaves,reduce the fruit cracking rate o
作者
李君
王玲玲
Li Jun;Wang Lingling(Changzhi Vocational and Technical College,Changzhi,046000;Hunan Agricultural University,Changsha,410125)
出处
《分子植物育种》
CAS
北大核心
2022年第18期6167-6176,共10页
Molecular Plant Breeding
基金
湖南省青年发展基金支持项目(QNZC24256645)资助。
关键词
叶面钙肥
螯合钙
石榴
果实品质
开裂
Foliar calcium fertilizer
EDTTi-Ca
Pomegranate
Fruit quality
Cracking
