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Reproductive Behavior of Tomato Plant Under Saline Condition with Exogenous Application of Calcium

Khursheda Parvin
Department of Horticulture, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh

Kamal Uddin Ahamed
Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh

Indrajit Roy
Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh

Abstract/ Executive Summary:

The effect of salinity and mitigation of saline toxicity with calcium on reproductive response of tomato plants grown under pot conditions was studied with five salinity levels (0, 2, 4, 6 and 8 dS m 1) and three Ca2+ levels (0, 5 and 10 mM). Irrigation with salinized water alone resulted in a significant suppression in flower and fruit production, flower dropping pattern, fruit length, fruit diameter and yield. Applying the salinized plants with calcium improved tomato fruit production to some extent in regards to salinity impact. Under the studied salinity level there was a decrease in flower production rate with significant reduction in tomato fruit yield where Ca successfully reduce the reduction rate of yield. Therefore, this experiment suggests that Ca2+ can effectively mitigate the deleterious effect of Na+ stress in tomato cultivation.

Keywords: Lycopersicon esculentum, Flower dropping, Flower and fruit number, Fruit size, Yield

Location: Horticulture farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Start Date: 00-01-2013

End Date: 00-04-2013

Program Area: Variety and Species

Commodity: Tomato

Objectives:

To know the reproductive behavior of tomato plant under saline condition with exogenous application of calcium

Methodology:

The experiment was conducted in pots under venyl house at Horticulture farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. The soil of the experimental area belongs to the Modhupur Tract. The experiment was laid out in Randomized Complete Block Design (RCBD) with fifteen treatment combinations and four replications on tomato variety called BARI Tomato-5. Thirty-day-old seedlings were used to salinity treatment at different levels viz., 0, 2, 4, 6, 8 dSm^-1which were maintained by adding 0, 12, 27, 48 and 58 g of sodium chloride (NaCl) respectively combined with three levels of Ca²⁺ in the form of CaSO₄ .0.5H₂O viz., 0, 5, 10 mM irrigation water in three splits at 30, 50 and 70 DAT where each pot contained 10 kg soil. Ca²⁺ was also applied with irrigation water at same time. Number of flower cluster plant 1, number of flowers cluster^-1, number of flowers plant^-1, number of fruits cluster^-1 number of fruits plant^-1, number of dropped flower plant^-1, fruit length (cm), fruit diameter (cm) and fruit yield (t ha^-1) were recorded. Statistical Analysis: All the data collected on different parameters were statistically analyzed following the analysis of variance (ANOVA) technique using MSTAT-C programme and the mean differences were adjudged by least significant difference (LSD) test at 5% level of significance.

Source of Information: Middle-East J. Sci. Res., 23 (12): 2920-2926, 2015

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The addition of Ca²⁺ to NaCl-stressed tomato plants have a significant role in alleviating the deleterious impacts of salinity stress on reproductive response and ultimately increase the fruit yield. This work recommends that the application of Ca²⁺ can ameliorate the negative effect of salinity on tomato plants and could offer an economical and simple way to reduce the salinity problem in tomato cultivation under saline condition.

Knowledge Management: Journal