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배 'Niitaka'생육기의 수체내 Ca 함량 변화 및 Ca 엽면 살포가 과실의 품질에 미치는 영향 원문보기
Changes in calcium contents of leaf and during growing, effect of foliar sprays of calcium on fruit quality of 'Niitaka'pear

  • 저자

    김익열

  • 학위수여기관

    경북대학교 대학원

  • 학위구분

    국내박사

  • 학과

    원예학과 과수원예전공

  • 지도교수

  • 발행년도

    2004

  • 총페이지

    105p.

  • 키워드

    과수재배 인과류 배;

  • 언어

    kor

  • 원문 URL

    http://www.riss.kr/link?id=T10045459&outLink=K  

  • 초록

    This study was carried out to investigate on contents of fractioned Ca form in the leaf and fruit, the correlation of mineral nutritions, symptoms of calcium deficiency fruit, and effective foliar spray of calcium compound on fruit quality of 'Niitaka' pear. The obtained results are summarized as follows: 1. Calcium contents in the leaf and fruit during the growing season. Calcium contents in the shoot leaf was increased from 19 to 61 days after full bloom, and it was decreased from 61 to 187 days after full bloom. However calcium contents in the spur leaf was increased. The percent of water soluble calcium increased from 14.6% to 20.9%, while the percent of total Ca extracted by HCl decreased from 45.3% to 39.5% in the shoot leaf during growing season. The percent of water soluble Ca increased from 9.4% to 15.8%, while the percent of sodium nitrate exchangeable Ca decreased from 25.2% to 20.8% in the spur leaf. The percent of water soluble Ca increased from 14.3% to 28.6%, while the percent of sodium nitrate exchangeable Ca decreased from 59.8% to 31.0% in the fruit flesh. In fruit, both ratios increased at about the different rate over the growing season, so that use of physiologically active(PA) K+Mg/Ca instead of total K+Mg/Ca would improve predictions of physiologically disorders at 124 days later after full bloom. Calcium contents of spur leaf was negatively correlated with contents of N, P, K, and Mg, while a positive correlation with content of Mn, and Fe. Calcium contents in the spur leaf was negatively correlated with calcium contents in the shoot leaf(r=-0.71^(*)) and fruit flesh(r=-0.97^(**)) during growing season. A significant positive correlation was shown between calcium contents in the shoot leaf and fruit flesh(r=0.77^(**)), fruit flesh and fruit peel(r=0.72^(*)) during growing season. A significant positive correlation was shown between calcium contents in the shoot leaf and during of sunshine(r=0.49^(*)). However calcium contents in the shoot leaf had a negative correlation with rainfall(r=-0.42^(*)). Calcium contents of spur leaf was highly correlated with duration of sunshine(r=-0.68^(**)), rainfall(r=0.46^(*)) and average temperature(r=0.41^(*)). 2. Relationship of calcium deficiency fruit and mineral nutrients in leaf, fruit, and soils. The calcium contents were no significant differences between healthy tree in soils and calcium deficiency tree in soils. However N, P, K, and Mg contents were higher calcium deficiency tree in soils than healthy tree in soils. The calcium contents were lower calcium deficiency tree in leaf than healthy tree in leaf. However there were no significant difference. The ratios N/Ca and K/Ca were higher calcium deficiency tree in leaf than healthy tree in leaf. The calcium contents were lower calcium deficiency fruit than healthy fruit in flesh and peel. However the ratios Mg/Ca and N+K+Mg/Ca were higher. The percent of water soluble and sodium nitrate exchangeable Ca were higher in calcium deficiency fruit than healthy fruit. However the percent of total Ca extracted by HAc and HCl were lower. 3. Effective foliar spray of calcium on fruit quality and storability. The contents of water soluble and sodium nitrate exchangeable calcium were increased by foliar spray of Ca. Effects of foliar spray of calcium and calcium with some adjuvants were no significant difference among the treatments. The spray of CaCl_(2)+phytic acid was also effective on increase of calcium content in the shoot and spur leaf. The spray of CaCl_(2)+amino acid was also effective on the increase of calcium content in fruit flesh. The contents of N and Mg in the shoot and spur leaf were decreased by spraying liquid calcium compound, while Mn and Fe were increased. The ratios N/Ca, K/Ca, Mg/Ca, and N+K+Mg/Ca in the leaf and fruit flesh were lower in calcium treated tree than untreated control. The contents of total amino acid in the leaf and fruit were increased by spraying liquid calcium compound, and CaCl_(2)+amino acid treatment was highest. The contents of glutamic acid, proline, glycine, and lysine in the shoot and spur leaf were increased by spraying liquid calcium compound. The contents of leucine, arginine, and lysine in the fruit peel and fruit flesh were increased by spraying liquid calcium compound. The contents of water soluble and sodium nitrate exchangeable calcium in the fruit flesh were gradually increased until 180 days during storage, but calcium treatment effectively delayed the increment of water soluble and sodium nitrate exchangeable calcium. The contents of water soluble and sodium nitrate exchangeable calcium in the fruit flesh and peel were higher in calcium treated tree than untreated control. However the contents of Ca extracted by HAc and HCl were no significant difference among the treatments. The contents of alcohol insoluble substance(AIS) of fruit flesh was gradually decreased until 180 days during storage, but calcium treatment effectively inhibited the decrement of contents of AIS. The contents of calcium, pectin, and total-sugar of AIS were higher calcium treatment than untreated control. CaCl_(2)+amino acid treatment was highest. The contents of calcium, pectin, and total-sugar of AIS were gradually decreased until 180 days during storage, but calcium treatment effectively delayed the decrement of them. The flesh firmness was gradually decreased during storage, but calcium treatment effectively delayed the decrement of flesh firmness. The soluble solid was increased during storage, and CaCl_(2)+amino acid treatment was highest. The contents of titratable acid were no significant difference among the treatment at harvest. However CaCl_(2)+phytic acid, CaCl_(2)+amino acid were delayed the decrement of contents of titratable acid until 180 days during storage.


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