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Relationship Between Yield and Component Characters of Bush Bean (phaseolus Vulgaris L.)

Siddhartha Kumar Roy
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

Md. Abdul Karim
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

A. K. M. Aminul Islam
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

Md. Nasimul Bari
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

M. A. Khaleque Mian
Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

Tetshushi Hidaka
Kagoshima University Research Center for the Pacific Islands, 1-21-24 Korimoto, Kagoshima 890-8580, Japan

Abstract/ Executive Summary:

Relationship between yield and its component characters of twenty seven bush bean (Phaseolus vulgaris L.) genotypes were studied during November 2002 to February 2003. Ten characters were studied to identify suitable traits for yield improvement of this crop. Significant variation in seed yield per plant was noticed among the genotypes and the yield difference was attributed mainly due to variation in yield components. The number of pods per plant was the highest in BB 15 followed by BB 3. The highest number of seeds per pod was found in BB 3, while BB 22 had the least. Based on the seed yield per plant, the 27 genotypes were grouped as high yielder (BB 3, BB 9 and BB 15), medium yielder (BB 10, BB 11, BB 12, BB 13, BB 14, BB 16 and BB 18) and low yielder (BB 1, BB 2, BB 4, BB 5, BB 6, BB 7, BB 8, BB 17, BB 19, BB 20, BB 21, BB 22, BB 23, BB 24, BB 25, BB 26 and BARI Bush bean-1). The differences between genotypic coefficient of variation (GCV) and the phenotypic coefficient of variation (PCV) were low for all the characters, indicated a low environmental influence over genetic factors on the characters. The GCV and PCV were generally high for pods/plant, 100-seed weight, duration of flowering, seeds/pod and seed yield/plant. High heritability coupled with high genetic advance was observed for duration of flowering, pods/plant, 100-seed weight, seed yield/plant and protein content. Days to 50% flowering, duration of flowering, plant height, pods/plant and seeds/pod had high degree of significant positive correlation with seed yield/plant. Path analysis indicated that pods/plant, days to 50% flowering, 100-seed weight, seeds/pod, plant height and pod length had positive direct effect on seed yield/plant. Those traits could, therefore, be of useful for yield improvement program of bush bean.

Keywords: Genetic variability, Correlation, Path coefficient, Seed yield, Bush bean

Location: Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur

Start Date: 00-11-2002

End Date: 00-02-2003

Program Area: Variety and Species

Commodity: Bush bean

Objectives:

To analyze the relationship between yield components, association among desired traits and their direct and indirect contributions toward seed yield in employing 27 potential genotypes of bush bean.

Methodology:

The experiment was carried out at the experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur during November 2002 to February 2003. The soil was silty clay in texture, with p^H 6.5. The climate of the experimental site was subtropical in nature characterized by heavy rainfall during June to September and scanty in winter (November to March). Twenty seven potential bush bean genotypes were the test materials. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The whole experimental area was divided into three blocks, representing three replications. Each block was further subdivided into 27 unit plots. The twenty seven genotypes were allotted to the 27 unit plots of each block. The plots were raised by 15 cm from the ground level to avoid water-logging, if occurred. The unit plot size was 4.0 m x 1.0 m, and the row – row and plant – plant spacing were 0.3 m and 0.1 m, respectively. The plot – plot and block – block distances were 0.5 m and 1.0 m, respectively. Seeds were subjected to germination test and treated with Vitavax-200 @ 3g kg^-1 of seed for an hour before sowing to protect from diseases. Seeds were sown at about 3.0 cm depth. Manure and fertilizers were applied according to Islam and Newaz (2001).

All necessary cultural operations were done as and when necessary during the growing period. Data were collected, from 10 randomly selected plants, on days to 50% flowering, duration of flowering, plant height (cm), pod length (cm), pod breadth (mm), number of pods/ plant, number of seeds/ pod, 100-seed weight (g), seed yield/ plant (g) and percentage of protein content. Total protein in seeds was estimated by multiplying nitrogen content with 6.25, while total nitrogen was estimated Colorimetrically following Linder (1944). The data were analyzed for estimation of genotypic and phenotypic coefficients of variation following Burton (1952). Heritability in broad sense and genetic advance were calculated according to the methods of Allard (1960). Simple correlation coefficients among the characters at phenotypic and genotypic levels were analyzed following Hayes et al. (1955), and Singh and Chaudhary (1985). Path analysis at genotypic level was done following Deway and Lu (1959).

Source of Information: South Pacific Study Vol.27 no.1 p.13 -23, 2006

Article Link (Online Journal): http://ir.kagoshima-u.ac.jp/bitstream/10232/9517/2/AN10088628_v27n1_p13-23.pdf

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Significant variation in seed yield per plant was noticed among the genotypes and the yield difference was attributed mainly due to variation in yield components. The differences between genotypic coefficient of variation (GCV) and the phenotypic coefficient of variation (PCV) were low for all the characters indicated a low environmental influence over genetic factors on the characters. The GCV and PCV were generally high for pods/ plant, 100-seed weight, duration of flowering, seeds/ pod and seed yield/ plant. High heritability coupled with high genetic advance was observed for duration of flowering, pods/ plant, 100-seed weight, seed yield/ plant and protein content. Days to 50% flowering, duration of flowering, plant height, pods/ plant and seeds/ pod had high degree of significant positive correlation with seed yield/ plant. Path analysis indicated that pods/ plant, days to 50% flowering, 100-seed weight, seeds/ pod, plant height and pod length had positive direct effect on seed yield/ plant. Those traits could, therefore, be of useful for yield improvement program of bush bean.

Knowledge Management: Journal