The World Vegetable Center in Taiwan

Shanhua, Taiwan

The World Vegetable Center in Taiwan

Shanhua, Taiwan
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Ezin V.,University Abomey Calavi | Ezin V.,The World Vegetable Center in Taiwan | de la Pena R.,The World Vegetable Center in Taiwan | Ahanchede A.,University Abomey Calavi
Electronic Journal of Environmental, Agricultural and Food Chemistry | Year: 2010

In this study, six wild relative genotypes (LA1310, LA1579, LA1606, LA2079, LA2081, and LA4133), and three varieties (CLN2498E, CA4, and Arka Meghali) were grown in a clay loamy soil containing 0, 50, 100, and 200mM NaCl i.e. 0.219, 5.45, 10.42, and 20.44 dSm-1 (electrical conductivity) to investigate the effect of salinity on growth parameters: plant height, leaf number, leaf length, chlorophyll content, and chlorophyll fluorescence, yield and yield components: days to flowering, days to fruiting, days to maturity, number of flowers and fruit set from cluster 2 to cluster 6, fruit weight, fruit length, fruit width, and total yield. These four treatments were applied when tomato plants were four weeks old and the experiment was conducted until maturity. The results obtained under continuous salinity could be summarized as follows: chlorophyll fluorescence showed slight increase as salinity increase except with LA1579 where it was significantly different at 200mM of NaCl. Chlorophyll content showed stable values at all salinity levels. The results also showed that as the salinity increased, the amount of above growth parameters and yield and yield components decreased in all the nine lines used. It could be concluded from these findings that the effect of salinity appears to be most pronounced on total yield growing under continuous salinity. However, LA1606, LA1579, and LA4133 genotypes and CLN2498E cultivar showed better tolerance salinity than others.


Ezin V.,University Abomey Calavi | Ezin V.,The World Vegetable Center in Taiwan | de la Pena R.,The World Vegetable Center in Taiwan | Ahanchede A.,University Abomey Calavi
Electronic Journal of Environmental, Agricultural and Food Chemistry | Year: 2010

A greenhouse experiment was conducted to investigate the effect of flooding on two tomato cultivars and two wild related species. Forty days old tomato plants were subjected to a continuous flooding stress of different durations: 0, 2, 4 and 8 days. Plant pots were placed inside larger plastic pots; they were irrigated with excessive quantity of tap water at 25°C so that the level of water above the surface of soil was 15 cm throughout the flooding period. At the bottom of each plastic pot a drilled hole allowed complete drainage of the pot after flooding. Parameters studied include plant height, number of leaves, leaf length, chlorophyll fluorescence, chlorophyll content, wilting, leaf senescence, adventitious root formation, number of flowers and fruits from cluster 2 to 6, average weight per fruit, fruit length and width, total fruit weight from cluster 2 to 6, total yield per plant. LA1579 genotype was more subjected to the deleterious effect of flooding on almost all the parameters studied. Therefore LA1579 genotype is flooding sensitive. Genotypes CLN2498E, and CA4 showed high tolerance to flooding while LA1421 genotype was tolerant to some extent. This experiment provides information that could help in the identification of physiological and agronomical parameters associated with flood-tolerance in vegetables.


Ezin V.,University Abomey Calavi | De La Pena R.,The World Vegetable Center in Taiwan | Ahanchede A.,University Abomey Calavi
Brazilian Journal of Plant Physiology | Year: 2010

A greenhouse experiment was conducted to investigate the effect of flooding on two tomato cultivars and two wild related species. Forty days old tomato plants were subjected to a continuous flooding stress of different durations: 0, 2, 4 and 8 days. Plant pots were placed inside larger plastic pots; they were irrigated with excessive quantity of tap water at 250C so that the level of water above the surface of soil was 15 cm throughout the flooding period. At the bottom of each plastic pot a drilled hole allowed complete drainage of the pot after flooding. Parameters studied include plant height, number of leaves, leaf length, chlorophyll fluorescence, chlorophyll content, wilting, leaf senescence, adventitious root formation, number of flowers and fruits from cluster 2 to 6, average weight per fruit, fruit length and width, total fruit weight from cluster 2 to 6, total yield per plant. LA1579 genotype was more subjected to the deleterious effect of flooding on almost all the parameters studied. Therefore LA1579 genotype is flooding sensitive. Genotypes CLN2498E, and CA4 showed high tolerance to flooding while LA1421 genotype was tolerant to some extent. This experiment provides information that could help in the identification of physiological and agronomical parameters associated with flood-tolerance in vegetables.

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