Role of calyx lobes in gas exchange and development of persimmon fruit

K. Yonemori, A. Itai, R. Nakano, A. Sugiura

研究成果査読

14 被引用数 (Scopus)

抄録

The role of calyx lobes in CO2 exchange in persimmon (Diospyros kaki Thunb.) fruit was investigated during fruit growth and development. Carbon dioxide exchange rates of attached and detached fruit were measured in light and dark conditions in the field after calyx lobes were removed. Calyx lobes were removed at fruit growth stages I and III, which were defined as the period when fruit diameter increases >0.3 mm · d-1 (Zheng et al., 1990). Removing calyx lobes at stage I significantly inhibited fruit growth, while removing them at stage III had no effect on growth. Two weeks after calyx lobes were removed at stage 1, CO2 exchange decreased 80% in light and dark conditions compared with the control fruit. The rapid decreases of CO2 exchange rate by calyx lobe removal at stage I were obvious if expressed per fruit or on a fresh weight basis. In contrast, treatment at stage III had no effect on CO2 exchange rate of fruit and no effect on fruit growth. However, when the calyx lobe scars were sealed with Vaseline soon after calyx lobe removal at stage III, an immediate decline in CO2 exchange rate in the dark occurred with simultaneous inhibition of the final swell in fruit growth. A possible relationship between fruit growth potential and gas-exchange capacity is discussed.

本文言語English
ページ(範囲)676-679
ページ数4
ジャーナルJournal of the American Society for Horticultural Science
121
4
DOI
出版ステータスPublished - 7月 1996

ASJC Scopus subject areas

  • 遺伝学
  • 園芸学

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