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Performance of Eight Tomato Mutants in Winter Season

S. Ghosh
Bangladesh Agriculture Research Institute (BARI), Rangpur

M.H. Khan
Bangladesh Agriculture Research Institute (BARI), Rangpur

K.C. Saha
Bangladesh Agriculture Research Institute (BARI), Rangpur

M.G. Azam
Bangladesh Agriculture Research Institute (BARI), Rangpur

M.H.R. Pramanik
Dept. of Crop Botany, Bangladesh Agricultural University, Mymensingh, Bangladesh

Abstract/ Executive Summary:

Eight tomato mutants (TM-113, TM-127, TM-128, TM-131, TM-132, TM-133, TM-134 and TM-160) along with two reference varieties (Binatomato-4, Binatomato-5) were evaluated based on their morpho-physiological features, reproductive characters, yield attributes and fruit yield at the experimental farm of Bangladesh Institute of Nuclear Agriculture (BINA). The experiment was laid out in a randomized complete block design with three replications. The mutants differed significantly from their morphological features (plant height, branch and leaf number, leaf area, etc.), growth characters (root weight and total dry mass plant^-1, absolute and relative growth rate), biochemical parameters (chlorophyll, total sugar, nitrate reductase and vitamin-C contents), reproductive behaviour (number of effective and non-effective flower cluster plant^-1, number of flowers plant^-1 and reproductive efficiency), yield attributes and fruit yield. Superior performance in leaf area, total dry mass production, absolute growth rate, nitrate reductase activity and total sugar content in leaves, number of flower cluster and flowers plant-1which resulted higher number of fruits plant^-1. Chlorophyll content and reproductive efficiency had little or no significant contribution to fruit yield. Fruit yield had highly significant positive correlation with leaf area, total dry mass, absolute growth rate, number of flower clusters and fruits plant^-1, while fruit size had significant negative association with fruit number. This result indicates that the improvement of fruit number plant^-1 could be achieved by selecting increased number of effective flower cluster plant^-1. The mutant, TM-133 maintained superiority to the other mutants for yield related traits and produced highest fruit yield (95.1 t ha^-1) and thus, it may be treated as a promising mutant to release as variety.

Keywords: Tomato, Mutant, Binatomato, Yield, Genotype, Variety

Location: At laboratory and experimental field of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh

Start Date: 00-10-2009

End Date: 00-03-2010

Program Area: Variety and Species

Commodity: Tomato

Objectives:

The present research work was designed to evaluate the performances of eight elite tomato mutants along with two reference varieties based on their morpho-physiological features, reproductive characters, yield attributes and fruit yield.

Methodology:

The experiment was carried out at laboratory and experimental field of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh during October 2009 to March 2010. The experiment consisted of eight tomato mutants each representing a treatment along with two reference varieties. The mutants were TM-113, TM-127, TM-128, TM-131, TM-132, TM-133, TM-134, TM-160 and the reference varieties were Binatomato-4 and Binatomato-5. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The unit plot size was 3.0m × 4.0 m. Tomato seedlings were raised in seedbed. The seeds of each genotype were sown in the seed bed on 20 October, 2009. The seed beds were prepared in iron sheet tray (50 cm x 60 cm). After sowing, the seeds were covered with light soil. 25-day old seedlings were transplanted in the experimental plot on 15 November, 2009. First harvest of ripen tomato started at 80 DAT. At initial ripening stage, ripen tomato was harvested at 5-day interval and after a few days, ripen tomato was harvested at 2-day interval. All the harvests came to end in March 2010. The data were collected on morphological parameters-plant height (cm), number of branches plant^-1, number of leaves plant^-1 and leaf area plant^-1(cm²); growth parameters-total dry matter plant^-1, root weight plant^-1, absolute growth rate and relative growth rate;biochemical parameters-chlorophyll estimation, nitrate reductase (NRase) activity, determination of total sugar and vitamin C content in fruit; reproductive characters-number of effective flower cluster plant^-1, number of non-effective flower cluster plant^-1, number of flowers plant^-1 and reproductive efficiency; yield and yield contributing characters-number of fruits plant^-1, single fruit weight, fruit yield plant^-1, fruit yield (t ha^-1). Statistical analysis The collected data were analyzed statistically following the analysis of variance (ANOVA) technique and the mean differences were adjudged by Duncan’s Multiple Range Test (DMRT) using the statistical computer package program, MSTAT-C (Russell, 1986). The simple correlation coefficient among the quantitative characters was estimated by using the statistical computer package program, MSTAT-C (Russell, 1986).

Source of Information: J. Biosci. Agric.Res. 09(01): 782-791

Article Link (Online Journal): DOI: 10.18801/jbar.090116.94

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Growth and development, biochemical parameters, yield contributing characters and yield of the studied tomato mutants varied significantly. Among them the mutants TM-128, TM-131 and TM-133 were superior to other mutants/varieties. The mutant TM-133 appears to be the best one and may be treated as superior one to release as variety. However, further studies are needed to confirm their performance in the other locations.

Knowledge Management: Journal