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Varietal differences in the susceptibility to pointed fruit malformation in tomatoes: Histological studies of the ovaries
Year:
1998
Source of publication :
Scientia Horticulturae
Authors :
Aloni, Benyamin
;
.
Cohen, Malka
;
.
Moshkovitz, Anna
;
.
Pressman, Etan
;
.
Rosenfeld, Katerina
;
.
Shaked, Rachel
;
.
Tomer, Eli
;
.
Volume :
77
Co-Authors:
Tomer, E., Department of Fruit Trees, ARO, Volcani Center, Bet Dagan 50250, Israel
Moshkovits, H., Department of Vegetable Crops, ARO, Volcani Center, Bet Dagan 50250, Israel
Rosenfeld, K., Department of Vegetable Crops, ARO, Volcani Center, Bet Dagan 50250, Israel
Shaked, R., Department of Vegetable Crops, ARO, Volcani Center, Bet Dagan 50250, Israel
Cohen, M., Department of Fruit Trees, ARO, Volcani Center, Bet Dagan 50250, Israel
Aloni, B., Department of Vegetable Crops, ARO, Volcani Center, Bet Dagan 50250, Israel
Pressman, E., Department of Vegetable Crops, ARO, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
145
To page:
154
(
Total pages:
10
)
Abstract:
Differences were found among three tomato cultivars (cvs.) in their susceptibility to pointed-fruit malformation. Pointed fruits are characterized by a conical, rather than a round shape. This type of fruit malformation is often found in winter-grown plants and is due to an uneven development of the locules. Transverse cross-sections of the fruit revealed that one or more of the locules had not developed, forming a flattened side, while the other side of the fruit was round (normal) in shape, because of the presence of developed placenta(s), with seeds and jelly filling their cavity(ies). Histological examination of the ovaries showed that under high night temperatures all the locules, of all the examined cvs., were normal and contained placentas with attached ovules. Ovaries that developed under lower night temperatures contained deformed locules: in the less severe cases the placenta was retarded, with fewer attached ovules than normal; in the most severe ones the locules were severely deformed and the placentas and ovules were absent. The number of deformed ovules per fruit and the degree of deformation were cultivar- and night temperature-dependent. Artificial pollination of the affected ovaries and exogenous auxin application did not improve the fruit shape. It is, therefore, concluded that the absence of placentas, seeds and jelly from one or more locules brings about the formation of a malformed, pointed (lop-sided) fruit.
Note:
Related Files :
auxins
Fruit malformation
Locules
Ovary deformation
Ovules
placenta
pollination
Show More
Related Content
More details
DOI :
10.1016/S0304-4238(98)00170-8
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
27289
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:29
Scientific Publication
Varietal differences in the susceptibility to pointed fruit malformation in tomatoes: Histological studies of the ovaries
77
Tomer, E., Department of Fruit Trees, ARO, Volcani Center, Bet Dagan 50250, Israel
Moshkovits, H., Department of Vegetable Crops, ARO, Volcani Center, Bet Dagan 50250, Israel
Rosenfeld, K., Department of Vegetable Crops, ARO, Volcani Center, Bet Dagan 50250, Israel
Shaked, R., Department of Vegetable Crops, ARO, Volcani Center, Bet Dagan 50250, Israel
Cohen, M., Department of Fruit Trees, ARO, Volcani Center, Bet Dagan 50250, Israel
Aloni, B., Department of Vegetable Crops, ARO, Volcani Center, Bet Dagan 50250, Israel
Pressman, E., Department of Vegetable Crops, ARO, Volcani Center, Bet Dagan 50250, Israel
Varietal differences in the susceptibility to pointed fruit malformation in tomatoes: Histological studies of the ovaries
Differences were found among three tomato cultivars (cvs.) in their susceptibility to pointed-fruit malformation. Pointed fruits are characterized by a conical, rather than a round shape. This type of fruit malformation is often found in winter-grown plants and is due to an uneven development of the locules. Transverse cross-sections of the fruit revealed that one or more of the locules had not developed, forming a flattened side, while the other side of the fruit was round (normal) in shape, because of the presence of developed placenta(s), with seeds and jelly filling their cavity(ies). Histological examination of the ovaries showed that under high night temperatures all the locules, of all the examined cvs., were normal and contained placentas with attached ovules. Ovaries that developed under lower night temperatures contained deformed locules: in the less severe cases the placenta was retarded, with fewer attached ovules than normal; in the most severe ones the locules were severely deformed and the placentas and ovules were absent. The number of deformed ovules per fruit and the degree of deformation were cultivar- and night temperature-dependent. Artificial pollination of the affected ovaries and exogenous auxin application did not improve the fruit shape. It is, therefore, concluded that the absence of placentas, seeds and jelly from one or more locules brings about the formation of a malformed, pointed (lop-sided) fruit.
Scientific Publication
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