8-1-1 Shakera et al - NEW PLANT TYPE GENOTYPES IN BRASSICA RAPA L.

NEW PLANT TYPE GENOTYPES IN BRASSICA RAPA L.

Amatullah Shakera*, Md. Shahidur Rashid Bhuiyan, Naheed Zeba, Md. Golam Robbani and Md. Akkas Ali

Corresponding author: email: shakera.sau@gmail.com

Abstract

The experiment was carried out to study the mean performance, heritability and genetic gain of yield and its components and to find out new plant type genotypes of Brassica rapa. A total number of 23 (Twenty three) materials were used in this experiment where three were checks varieties, twenty were F₃ and F₄ segregating materials. The genotype BARI Sarisha-15 × SAU Sarisha-2 of F₃ and F₄ population and the widely cultivated check variety BARI Sarisha-15 required almost similar days to mature showing almost similar number of seeds per siliqua and thousands seed weight. The other yield contributing characters e.g. plant height, number of primary branches per plant, number of secondary branches per plant, number of siliqua per plant and siliqua length were recorded higher in BARI Sarisha-15 × SAU Sarisha-2 than the checks. The yield per plant was found higher in the genotype BARI Sarisha-15 × SAU Sarisha-2 than BARI Sarisha-15. The days to maturity, plant height and thousand seed weight were almost same in the genotype BARI Sarisha-15 × SAU Sarisha-3 and BARI Sarisha-15. The genotype BARI Sarisha-15 × SAU Sarisha-3 showed higher number of secondary branches per plant, number of siliqua per plant, siliqua length, number of seed per siliqua and yield per plant than popular variety BARI Sarisha-15. Thousand seed weight and yield per plant had high heritability along with high genetic advance in percent mean. The moderate heritability and high genetic advance in percent mean were recorded for number of secondary branches per plant and number of siliqua per plant indicating that the selection of these traits would be effective. The genotypes BARI Sarisha-15 × SAU Sarisha-3 and BARI Sarisha-15 × SAU Sarisha-2 were chosen as new plant type for their better performance in aspects of yield and yield contributing traits than the popular check varieties.

Key word: Brassica rapa, mean performance, heritability, genetic gain.

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6-2-11-Rahman et al

Screening of Field Pea genotypes against salinity stress under laboratory condition

Authors: M. A. Rahman, R. R. Saha, M. A. Jahan, B. Ahmed and N. Mokarroma

*Corresponding author, E-mail: aminurbari@gmail.com

Abstract

Thirty field pea genotypes were tested against varying levels of salinity (0, 5, 10 and 15 dS m^-1) in Hoagland solution under laboratory condition at Plant Physiology Division, BARI during 2013-2014 to find out the salt tolerant genotypes at germination and seedling stages.  The study was conducted in completely randomized design (CRD) with three replications. Distilled water was used as control (0 dS m^-1) treatment.  Germination percentage, seedling root and shoot length, root and shoot dry weight and vigor index were found to be affected by different levels of salinity. The genotypes BD-4159, BD-4150, BD-4163, BD-4161, BD-4152, BD-4160, BD-4167 and BD-4151 showed better performance up to 10 dS ­­­m^-1 as evaluated on the basis of germination percentage, seedling growth and vigour index.

Key words: Field pea, Salinity, Genotypes, Germination and vigour index

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Return Volume: Journal of Experimental Biosciences 6(2): July 2015

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6-2-6-Kabir et al

PERFORMANCE OF DIFFERENT EXOTIC INBRED RICE GENOTYPES DURING TRANSPLANTED AMAN SEASON

Authors: A. Kabir, M.J. Rahman^*, M. M. Rashid, M. S. Islam  

*Corresponding author, E-mail: julfiker.rahman@brac.net

Abstract

Five exotic rice genotypes including one check BRRI dhan39 were evaluated for the performance of growth and yield parameter during transplanted Aman season 2012 in BARDC, Gazipur, Bangladesh. The exotic genotypes were CNI9012, GSR IRRI I 2, OM576, Thai03 and Thai011. Experiment results showed the significant differences on growth and yield contributing parameters among the varieties. The yield of OM576 (5.81 t ha^-1) was higher than the popular check BRRI dhan39 and the lowest grain yield was found in Thai03. The highest yield was observed due to higher panicle number m^-2 (443.3) and higher spikelet filling percentage. The growth duration of OM576 (101 days) was 17 days shorter than BRRI dhan39 (118 days). The result suggests that the genotype could be recommended to release as new variety in Bangladesh for increasing rice yield in Aman season.

Key words: Inbred, Rice and genotypes

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Return Volume: Journal of Experimental Biosciences 6(2): July 2015

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GENOTYPE x ENVIRONMENT INTERACTION OF TOSSA JUTE (CORCHORUS OLITORIUS L.) FOR FIBRE AND SEED YIELD

Author (s): Nargis Akter, M. M. Islam, A.S.M. Yahiya and M. A. Newaz

 Abstract

Genotype-by-sowing date interaction of seven jute genotypes (O-9897, O-72, A-1749, O-4, SDLT2, JRO-524 and A-4582) for fibre and seed yield were assessed at three different sowing dates (1st March, 1st April & 1st May) treated as sowing environments through regression and deviation from regression analysis. The experiments were carried out at the Jute Agriculture Experimental Station (JAES) of BJRI, Manikganj, Bangladesh during March’ 2005-December 2005 in Randomized Complete Block Design with three replications. The genotype  environment interaction was highly significant for number of pods plant-1, which indicated significant differences in the response of genotypes to changes in environments for this character. The Varieties O-9897, JRO-524 and A-4582 showed non-significant S2di suggested that the varieties might be stable for pods plant-1 under environmental fluctuation. The phenotypic index of A-1749 and O-4 were positive and the remaining was negative. Regression coefficient of JRO-524 had higher value than unity which indicated high responsiveness of the genotype and its suitability for favorable environments. Regression coefficient of O-9897 was close to unity for pods plant-1 indicating stable performance of the genotype over different sowing dates for the character. The genotype A-4582 had regression coefficient much lower than unity, reflected suitability of the genotype to poor environment for the concerned character.

J. Expt. Biosci.1(1) January 2010

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