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Effects of temperature and pollination on growth, flowering and fruit set of the non-astringent persimmon cultivar 'Fuyu' under controlled temperatures

journal contribution
posted on 2023-05-19, 03:29 authored by George, AP, Nissen, RJ, Collins, RJ
A controlled temperature room experiment evaluated the effects of four day/night tem-perature treatments on flowering, fruit set and growth of ‘Fuyu’, the most important non- astringent persimmon cultivar grown in Australia. Fruit set of hand-pollinated flowers at 17/12°C and 22/17°C was similar and averaged 53.6 and 54.9%, respectively. In contrast, fruit set of hand-pollinated flowers at 27/22°C and 32/27°C was significantly reduced by 58 and 77%, respectively. For the three higher temperature treatments, fruit set of non- pollinated flowers was very low (< 4.0%) compared with fruit set at 17/12°C, which averaged 50.2%. The greater fruit set of non-pollinated flowers at 17/12°C may have been due to a combination of increased flower size and reduced vegatative growth under these conditions. Higher shoot starch concentrations at anthesis were recorded with decreasing temperature, presumably due to reduced growth (17/12°C, 3.1%; 22/17°C, 1.9%, 27/22°C, 0.85%, 32/27°C, 0.90).

History

Publication title

Journal of Horticultural Science

Volume

69

Pagination

225-230

ISSN

0022-1589

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Headley Brothers Ltd

Place of publication

Invicta Press, Ashford, England, Tn24 8Hh

Repository Status

  • Restricted

Socio-economic Objectives

Horticultural crops not elsewhere classified

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