TY - JOUR
T1 - Changes in the alkaloid content of developing fruits of tomato (Lycopersicon esculentum Mill.)
T2 - I. Analyses of cultivars and mutants with different ripening characteristics
AU - Eltayeb, Elsadig A.
AU - Roddick, James G.
N1 - Funding Information:
ACKNOWLEDGEMENTS We thank Dr. L. A. Darby, Glasshouse Crops Research Institute, Littlehampton, U. K. for the gift of nor and rin seed and Mr. J. Kingdon, Department of Biological Sciences, University of Exeter for growing the plants. E. A. E. gratefully acknowledges the receipt of a Research Scholarship from the University of Khartoum, Sudan.
PY - 1984/2
Y1 - 1984/2
N2 - Normal ripening red-, orange- and yellow-fruited cultivars of tomato showed similar patterns of fruit growth and tomatine accumulation to those of non-ripening mutants. In all fruits, the tomatine concentration declined continuously from an early stage although the absolute amount per fruit showed a biphasic pattern of accumulation and decline. The turning point' occurred at an earlier developmental stage in normal fruits than in mutants. Normal fruits also had a lower initial and higher final tomatine content than mutants on a per fruit basis although, on a unit weight basis, their initial concentration was higher and final concentration lower. Small, prematurely-ripened red fruits had alkaloid levels intermediate between large, unripe, green fruits and large, ripe, red fruits. It is concluded that growth and ripening processes may both contribute to the decline in fruit tomatine.
AB - Normal ripening red-, orange- and yellow-fruited cultivars of tomato showed similar patterns of fruit growth and tomatine accumulation to those of non-ripening mutants. In all fruits, the tomatine concentration declined continuously from an early stage although the absolute amount per fruit showed a biphasic pattern of accumulation and decline. The turning point' occurred at an earlier developmental stage in normal fruits than in mutants. Normal fruits also had a lower initial and higher final tomatine content than mutants on a per fruit basis although, on a unit weight basis, their initial concentration was higher and final concentration lower. Small, prematurely-ripened red fruits had alkaloid levels intermediate between large, unripe, green fruits and large, ripe, red fruits. It is concluded that growth and ripening processes may both contribute to the decline in fruit tomatine.
KW - Fruit ripening
KW - Tomatine
KW - Tomato
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U2 - 10.1093/jxb/35.2.252
DO - 10.1093/jxb/35.2.252
M3 - Article
AN - SCOPUS:77956980774
SN - 0022-0957
VL - 35
SP - 252
EP - 260
JO - Journal of Experimental Botany
JF - Journal of Experimental Botany
IS - 2
ER -