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Performance of Some Tomato (solanum Lycopersicum L.) Genotypes in Summer and Winter Seasons

M. M. Alam Patwary
Agricultural Research Station, Bangladesh Agricultural Research Institute, Pahartali, Chittagong;

M. Mizanur Rahman
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh

Shahabuddin Ahmad
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

M. A. Khaleque Miah
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh

M. H. Rahman
Agricultural Research Station, Bangladesh Agricultural Research Institute, Pahartali, Chittagong;

Abstract/ Executive Summary:

An experiment was conducted at the Vegetable Research Field of Olericulture Division, Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur during October 2006 to March 2007 and May to September 2007 to evaluate the performance of tomato (Solanum lycopersicum) genotypes in summer and winter seasons. Early flowering was observed in summer compared to winter. Pollen viability decreased greatly during summer ranging from 30.44 % in TMS 003 to 86.08 % in C 11 compared to that in winter (70.33 % in C 61 to 100.00 % in VRT 002). Fruit set (%) markedly decreased in summer, which ranged from 4.69 % in TMS 017 to 39.15 % in C 51 while it ranged from and 49.00 % in TMS 008 to 90.01 % in HT 017 during winter. During summer, fruit set (%) exhibited positive significant and correlation with viable pollen grains (%). Yield per plant ranged from 1224 g in C 61 to 2670 g in VRT 003 and 37 g in TMS 015 to 94 g in C 11 in winter. The genotypes HT 019, C 11, C 21, C 41, C 51, HT 016 and HT 017 exhibited a considerable heat tolerance in relation to fruit setting ability.

Keywords: Tomato, Heat tolerance, Pollen viability

Location: Vegetable Research Field of Olericulture Division, Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur

Start Date: 00-10-2006

End Date: 00-09-2007

Program Area: Variety and Species

Commodity: Tomato

Objectives:

To compare genotypic differences in respect of different yield contributing characters during winter and summer seasons for selecting superior heat tolerant genotypes of tomatoes suitable for summer season.

Methodology:

The experiment was conducted at the Vegetable Research Field of Olericulture Division, Horticulture Research Centre (HRC), Bangladesh Agricultural Research Institute (BARI), Gazipur during October 2006 to March 2007 and May to September 2007. The location of the experiment was at 24 0N latitude, 92.25 0E longitude and 8.4 metre elevation from the sea level (Anon., 1995). It was situated in the subtropical climatic zone, characterized by heavy rainfall during the month of May to August and scanty rainfall during the rest of the year. Data on temperature and relative humidity during the study period were recorded and were presented in Table 5. Seeds of twenty heat tolerant tomato genotypes as selected on the basis of literatures were collected from Olericulture Division, HRC, Bangladesh Agricultural Research Institute were used as plant materials. Seeds were sown and seedlings were grown both in winter and summer seasons. For winter and summer seasons seeds were sown on 27 October 2006 and 08 May, 2007, respectively. The seedlings were transplanted in the main experimental field at 35 days after sowing during winter and at 25 days during summer. Plants were given support by bamboo sticks in both seasons. Winter crops were grown in open field and the summer crops were grown under transparent poly tunnel. The poly tunnels were 2.3 meter wide. Each poly tunnel contained two 1.0 meter wide bed, with 30 cm drain in-between. The experiment was laid out in randomized complete block design (RCBD) with three replications both in summer and winter. The unit plot size was 3.2 m x 1.0 m and the plants were spaced 40x60 cm on beds. The layout for winter crop was also same but without poly tunnel. Chemical fertilizers @ 550 kg urea, 450 kg TSP, 250 kg MoP, 120 kg Zypsum, 2 kg Boron and 10 metric ton cow dung per hectare were applied. Half of the cow dung and the entire quantity of TSP were applied during final land preparation. The pits were prepared one week before transplanting seedlings. The remaining cow dung and 1/3 of MoP were applied in pits during prepared. Top dressing was done in 3 equal installments at 10, 25 and 40 days after transplanting to apply the entire urea and rest 2/3 of MoP. Weeding and mulching were done followed by top-dressing and irrigation at 15 days interval. Data on days to 50% flowering, flowers per cluster, viable pollen, fruit set (%), fruits per plant (number), TSS content, fruit weight (g), fruit yield per plant (g), fruit length (cm), fruit diameter (cm), branches per plant, plant height (cm), seeds per fruit and 1000 seeds weight were recorded. The recorded data on different characters were analyzed statistically using MSTAT-C programme where means were compared by DMRT to find out the variation among the different genotypes.

Source of Information: The Agriculturists 12(2): 64-73 (2014) ISSN 2304-7321 (Online), ISSN 1729-5211 (Print), A Scientific Journal of Krishi Foundation

Article Link (Online Journal): http://banglajol.info/index.php/AGRIC/article/view/21733/14939

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

wide ranges of variability were existed among the 20 genotypes in respect of tomato for yield and yield contributing characters. The genotypes also showed seasonal variations for all the parameters. In summer, the maximum (940.8 g) yield was recorded from the genotype C 11 followed by C 51 (738.5 g), C 21 (717 g), C 41 (692.7 g) and HT 019 (619.0 g) showing higher degree of heat tolerance among the genotypes. On the other hand, the genotypes TMS 005, TMS 013, TMS 017 and TMS 011 produced lower fruit yield per plant indicating high degree of heat sensitivity. The situation was reverse during winter.

Knowledge Management: Journal