摘要
为了提高衰弱病杨梅的抗逆性、增强树势、改善果实品质,研究了氧化剂(HMAO)对衰弱病杨梅树势和果实品质的影响。结果表明:HMAO灌根处理有利于杨梅的营养生长,HMAO 600和300倍液处理的梢长显著长于CK,分别比CK增加90.91%和84.36%;梢粗以HMAO 600处理的最粗,为3.23 mm^(2)光合速率以HMAO 300倍液处理的最高,为4.39 μmol/(m^(2)·s),比CK高339%,其次是HMAO 600倍液处理,均显著高于CK;HMAO灌根处理可以引起杨梅细胞膜透性的变化,导致叶片相对电导率下降从而增强抗逆性,HMAO 300和150倍液处理的相对电导率比CK显著减小,分别比CK低6.3%和28.07%;HMAO灌根处理虽然降低了杨梅的单果重,但显著降低了果实的硬度和可滴定酸含量,果实品质有所提升。综合考虑各项指标,以HMAO 300~600倍液处理衰弱病杨梅比较合适。
To improve the stress-resistance,growth potential and fruit quality of waxberry (Myrica rubra) with weakening disease,the effects of an oxidant HMAO on the growth potential and fruit quality of waxberry trees were investigated in this experiment.Three concentrations of HMAO solutions (diluted 600 times,300 times and 150 times) were used to irrigate weakened waxberry trees,then the vegetative growth traits,fruit quality indexes,and electrical conductivity reflecting the permeability of the cytoplasmic membrane were detected.The results showed that the treatment of HMAO irrigating roots was conducive to the vegetative growth of waxberry trees.The new branch length in the root-irrigating treatments with HMAO 600x and 300x solutions was significantly longer than CK by 90.91% and 84.36%,respectively.The largest new branch diameter was 3.23mm obtained by the treatment of HMAO 600x solution.The maximum photosynthetic rate was 4.39 μmol/(m^(2)·s) obtained by the treatment of HMAO 300x solution,339% higher than CK,followed by HMAO 600x solution,both of which were significantly higher than CK.The root-irrigating treatment with HMAO may cause the change of permeability of waxberry cytoplasmic membrane,leading to the decrease of leaf relative electrical conductivity,thus the stress resistance is enhanced.The relative electrical conductivity in the treatments of HMAO 300x and 150x solutions was significantly reduced,6.3% and 28.07% lower than CK,respectively.The root-irrigating treatment with HMAO may influence single fruit weight,but can cause the fruit hardness and titratable acid level to decrease significantly,partially improving the fruit quality.Comprehensively considering every indexes,HMAO 300x and 600x solutions are suitable for the control of waxberry weakening disease.
作者
安笑笑
王嵘
张淑文
俞浙萍
任海英
AN Xiao-xiao;WANG Rong;ZHANG Shu-wen;YU Zhe-ping;REN Hai-ying(Institute of Horticulture,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,PRC;Tiantai Economic Special Products Technology Extension Station,Tiantai 317200,PRC;Lanxi Economic Special Products Technology Extension Center,Lanxi 321100,PRC)
出处
《湖南农业科学》
2022年第2期81-83,共3页
Hunan Agricultural Sciences
基金
浙江省科技厅重点研发计划(2019C02038
2020C02001
2021C02009)。
