Characterization of Endogenous Hormone and Quality Changes in Fruits Induced by Appropriate Application of Exogenous Calcium in Fruit Trees Mediated by Orchard Grassing Conditions
Five types of chelator calcium sources and artificial grass species were used as test materials,a field randomized block experiment design was adopted,in which clean water was used as CK,and the selected chelator calcium sources were sprayed at diluted concentrations of 500,1 000 and 1 500 times,and were planted in combination with the coupling mode of artificial grass and clearing cultivation in the rows.The characteristics of endogenous hormones and quality changes of fruits under different types of chelator calcium sources and biograssing treatments were investigated,in order to provide reference for local fruit enhancement to carry out sustainable biograssing management and standardized fertilization in orchards.The results showed that after fruit ripening,the overall treatment enhancement effect was mainly concentrated in the dilution of 1 000-fold concentration,in which SA(1 000-fold)and OM(1 000-fold)coupled with the biograssing pattern enhanced the endogenous hormones and quality of fruits significantly,gibberellin(GA)enhanced by 38.0％and 41.2％,cytokinins(CTK)enhanced by 26.9％and 38.3％,and auxin(IAA)enhanced by 47.4％and 52.9％,and abscisic acid(ABA)antagonism by 34.9％and 35.1％;among the fruit qualities,the quality of single fruit was increased by 20.6％and 16.6％;titratable acid by 24.0％(SA),soluble solids by 23.1％and 21.9％,hardness by 71.8％(SA),and soluble sugar by 20.1％(SA).The correlation showed that the correlation between endogenous hormones and fruit quality was focused on the dilution of 1000-fold concentration,and focused on the strongest correlation between the biograssing pattern and spray coupling(1 000-fold),and the most significant positive correlation between GA,CTK,and IAA with soluble sugar,hardness,and fruit shape index(P＜0.001);when spraying exogenous calcium only,the correlation between CTK,IAA,and single fruit weight,soluble solid,and soluble sugar was the most significant(P＜0.001).The correlation between CTK,IAA and single fruit mass,soluble solids and soluble sugar was the most significant(P＜0.001).The correlation between biograssing between orchard rows,mainly GA,IAA and single fruit weight,soluble solids,hardness and soluble sugar was significant and positive(P＜0.05).
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万方数据
维普
