CAJ | 학술논문

【目的】揭示钙对脐橙裂果的作用机理．【方法】以抗裂果的‘纽荷尔’ Citrus sinensis cv．Newhall 和易裂果的‘朋娜’Citrus sinensis cv．Skagg’s Bonanza为试材，进行外源补钙和钙吸收抑制剂处理，在不同时期记录果实裂果率，测定果皮钙含量和纤维素酶（ CX）、多聚半乳糖醛酸酶（ PG）、果胶甲酯酶（ PE）的酶活性．【结果和结论】抗裂的‘纽荷尔’的果皮钙含量高于易裂的‘朋娜’，同一品种正常果的果皮钙含量高于裂果；花后150 d，质量分数为2％Ca（OH）2的处理可以显著提高果皮钙含量，提高果皮硬度，降低裂果率；质量分数为2％Ca（OH）2处理与CX酶活性呈负相关关系；钙能通过影响细胞壁酶活性影响裂果，其中对‘朋娜’影响显著，对‘纽荷尔’作用不明显．
【목적】게시개대제등렬과적작용궤리．【방법】이항렬과적‘뉴하이’ Citrus sinensis cv．Newhall 화역렬과적‘붕나’Citrus sinensis cv．Skagg’s Bonanza위시재，진행외원보개화개흡수억제제처리，재불동시기기록과실렬과솔，측정과피개함량화섬유소매（ CX）、다취반유당철산매（ PG）、과효갑지매（ PE）적매활성．【결과화결론】항렬적‘뉴하이’적과피개함량고우역렬적‘붕나’，동일품충정상과적과피개함량고우렬과；화후150 d，질량분수위2％Ca（OH）2적처리가이현저제고과피개함량，제고과피경도，강저렬과솔；질량분수위2％Ca（OH）2처리여CX매활성정부상관관계；개능통과영향세포벽매활성영향렬과，기중대‘붕나’영향현저，대‘뉴하이’작용불명현．
Objective] The objective of the study was to find the relationships among calcium contents , cell wall enzyme activities and fruit cracking .[Method] Two naval orange ( Citrus sinensis) cultivars,‘Skagg ’ s Bonanza ’ and ‘Newhall ’ were treated with exogenous calcium or calcium uptake inhibitor . The contents of calcium , the rate of fruit cracking and the activities of polygalacturonase ( PG) , cellulase ( CX) , and pectinmethylesterase ( PE) were investigated in different periods .[Result and conclusion]The contents of calcium in ‘Newhall’ was higher than that in ‘Skagg’s Bonanza’.The content of calci-um in the normal fruits was higher than that in cracked fruits in the same cultivar .The mass fraction 2%Ca( OH) 2 treatment increased significantly the calcium content in the pericarp and fruit firmness , reduc-ing the rate of fruit cracking 150 days after anthesis.The mass fraction 2%Ca(OH)2 treatment reduced the activities of cellulase ( CX) .Calcium affected the incidence of fruit cracking through its effect on the activities of cell wall enzymes .Its effect was significant in ‘Skagg ’ s Bonanza ’ but not in ‘Newhall ’ .