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Titolo:
Physiological factors limit fruit set of tomato (Lycopersicon esculentum Mill.) under chronic, mild heat stress
Autore:
Sato, S; Peet, MM; Thomas, JF;
Indirizzi:
N Carolina State Univ, Dept Hort Sci, Raleigh, NC 27695 USA N Carolina State Univ Raleigh NC USA 27695 ort Sci, Raleigh, NC 27695 USA N Carolina State Univ, Dept Bot, Raleigh, NC 27695 USA N Carolina State Univ Raleigh NC USA 27695 ept Bot, Raleigh, NC 27695 USA
Titolo Testata:
PLANT CELL AND ENVIRONMENT
fascicolo: 7, volume: 23, anno: 2000,
pagine: 719 - 726
SICI:
0140-7791(200007)23:7<719:PFLFSO>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
COWPEA VIGNA-UNGUICULATA; MALE-STERILE TOMATOES; ANTHER DEVELOPMENT; POLLEN PRODUCTION; AIR-TEMPERATURE; CARBON-DIOXIDE; RESPONSES; TOLERANT; CO2;
Keywords:
Lycopersicon esculentum Mill.; Solanaceae; anther dehiscence; fruit set; high temperature; microsporogenesis; photosynthesis; pollen germination; pollen release; tomato;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Peet, MM N Carolina State Univ, Dept Hort Sci, Box 7609, Raleigh, NC 27695USA N Carolina State Univ Box 7609 Raleigh NC USA 27695 NC 27695 USA
Citazione:
S. Sato et al., "Physiological factors limit fruit set of tomato (Lycopersicon esculentum Mill.) under chronic, mild heat stress", PL CELL ENV, 23(7), 2000, pp. 719-726

Abstract

The effects of chronic, mild heat stress on fruit set, fruit production, release of pollen grains, photosynthesis, night respiration and anther dehiscence were examined in tomatoes (Lycopersicon esculentum Mill.) differing in high-temperature sensitivity. Plants were grown under three temperature regimes: (1) 28/22 or 26/22 degrees C (optimal temperature); (2) 32/26 degrees C (high temperature); and (3) 32/26 degrees C day/night temperatures relieved at 28/22 degrees C for 10 d before anthesis, then returned to 32/26 degrees C (relieving treatment). FLA 7156 was the only cultivar with fruit set at 32/26 degrees C. All five cultivars, however, had fruit set under therelieving treatment (RT). The longer the relief, the higher the percentageof fruit set. Longer periods of relief also increased the number of pollengrains released, and linear regression analysis showed a significant relationship between the number of pollen grains released and the percentage of fruit set. Germination of pollen grains was also lowered in high-temperature-grown plants. The number of pollen grains produced, photosynthesis and night respiration did not limit fruit set under chronic, mild heat stress, however. This suggested that cultivar differences in pollen release and germination under heat stress are the most important factors determining their ability to set fruit.

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Documento generato il 09/07/20 alle ore 17:22:53