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Evaluation of Some Gamma Ray Induced Sesame Mutants for Seed Yield and Oil Content

A. Rahman
Bangladesh Institute of Nuclear Agriculture P.O. Box 4, Mymensingh.

M.L. Das
Bangladesh Institute of Nuclear Agriculture P.O. Box 4, Mymensingh.

Abstract/ Executive Summary:

The field experiments with sixteen newly isolated mutants of sesame, conducted during 1993 and 1994 cropping seasons, revealed significant differences among mutants and two mother as checks for most of the characters examined. Five mutants gave higher seed yield than the characters examined. Five mutants gave higher seed yield than the check S-30 and seven mutants out yielded the check T-6 in 1993 trial. Mutant M-110 gave the highest seed yield ( 1827 kg/ha followed by M-113 (1792 kg/ha. M-107 (1677 kg) and M-109 (1650 kg). Check variety T-6 and S-30 produced 1503 kg seed/ha. Five mutants. S-104. S-109. S-110. S-113 and S-114 were tolerant to water logging conditions and resistant to stem rot disease (Macrophomina phaseolinal in field condition. The highest< 011 content (53%1 was obtained from three mutants, M-109, M-110 and M-111. Check var . T-6 and S-30 had 40% and 46% oil in the seeds. In 1994 experiment, mutant M-113 produced the highest seed yield (av. 1405 kg/hal followed by the mutant M-110 (1401 kg/hal while the two check, S-30 and T-6 gave 1193 kg and 1 203 kg seed/ha. respectively.

Keywords: Gamma ray, Sesame, Seed, Oil

Location: Conducted at BINA sub station farm, lshurdi

Start Date: 00-00-1993

End Date: 00-00-1994

Program Area: Variety and Species

Commodity: Sesame

Objectives:

To assess and confirm the seed yield and oil content .

Methodology:

Two experiments were conducted with the promising mutants of sesame. The experiment 1, a unilocation one, was conducted at BINA sub station farm, lshurdi with 16 elite mutants from M4 generation. The seeds of this experiment were sown on 25 September 1993. The Experiment 2 consisted of six mutants was sown on 16, 18 and 23 March 1994 at three agro-ecological zones of Bangladesh viz., RARS farm, Rahmatpur, Barisal; BRRI Regional Station, Camilla and BINA sub station, lshurdi, respectively. These six mutants were selected from M4 generation. Mother variety T-6 and S-30 were included in both these experiments as check. The experiments were laid out in randomized complete block design with 3 replications. Unit plot sizes were 3m x 3m and 4m x 5m for the Experiment 1 and 2, respectively. Recommended cultural practices were used for normal growth and development of plants.Data on plant height, number of capsules/plant, number of seeds/capsule, 1000-seed weight, seed yield, days to maturity and oil content were taken to analyse the mean values for statistical interpretation .Reaction to stem rot disease and resistance/tolerance to water logging conditions were carefully noted.

Source of Information: Bangladesh J. Agril. Sci. 23121: 41-45,January , 1996 ISSN 0379-4296

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results revealed that out of 16 mutants five mutants gave higher seed yield than S-30 and seven mutants out yielded the var. T-6. The mutant M-110 gave the highest seed yield ( 1827 kg per hectare) followed by M-113 ( 1792 kg per hectare), M-107 ( 1677 kg) and M-109 (1650 kg). The check variety T-6 and S-30 produced 1503 kg and 1605 kg seed/ha. It was also found that increase of seed yield was due to increased number of capsules/plant, number of seeds/capsule and 1000-seed weight. Pathak and Dixit ( 1986) reported direct effect of number of capsules, capsule length, number of seeds /capsule and 1000-seed weight on seed yield. Yadava eta!. ( 1980) reported significant correlations of seed yield with number of capsules, primary branches and 1000-seed weight. Two mutants, M-109 and M-110 produced the highest number of capsules/plant (37 and 39 capsules/plant, respectively) followed by S-30 (36 .capsules/plant). Number of seeds/capsule and 1000-seed weight were also found to be higher in most of the mutants than the control.

Knowledge Management: Journal