Premium
Some effects of temperature during seed development on carrot ( Daucus carota ) seed growth and quality
Author(s) -
GRAY D.,
STECKEL JOYCE R. A.,
DEARMAN JANE,
BROCKLEHURST P. A.
Publication year - 1988
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1988.tb02073.x
Subject(s) - daucus carota , endosperm , biology , germination , imbibition , seedling , horticulture , botany , embryo , microbiology and biotechnology
SUMMARY The growth and development of carrot seeds cv. Chantenay Red‐cored Royal Chantenay at day/night temperatures of 20/10°C, 25/15°C and 30/20°C and subsequent seed performance were examined in 1984 and 1985. An increase in temperature from 20/10°C to 30/20°C reduced mean weight per seed by 20% in 1984 and by 13% in 1985. There were no effects of temperature on endosperm + embryo weight, or on endosperm cell number but the weight of pericarp decreased with an increase in temperature. Seeds grown at the highest temperature had the largest embryos and the highest nitrogen, DNA and rRNA content; they germinated and emerged earlier, and gave higher percentage seedling emergence than those grown at the lowest temperature. There were no effects of temperature during seed growth on the rate of imbibition of water by seeds during the germination process.