International Journal of Plant Breeding and Genetics

International Journal of Plant Breeding and Genetics ISSN 5756-2148 Vol. 6 (10), pp. 001-006, October, 2019. © International Scholars Journals

Full Length Research Paper

Evaluation of some hybrid rice varieties in under different sowing times

Ali Abdalla Basyouni Abou-Khalif

Rice research and training center, filed crops, research institute, ARC, Egypt. E-mail: [email protected].

Accepted 26 March, 2019

Abstract

A field experiment was conducted in the experimental farm of Rice Research and Training Center (RRTC) – Sakha, Kafr- El Sheikh Governorate, and Egypt during rice season in 2008 for physiological evaluation of some hybrid rice varieties in different sowing dates. Four hybrid rice H1, H2, GZ 6522 and GZ 6903 were used. Seeds were sown on six different sowing dates April 10^th, April 20^th, May 1^st, May 10^th, May 20^th and June 1^st; and seedlings of 26 days old were transplanted at 20 ´ 20 cm spacing. All agricultural practices recommended for each cultivar were applied. Nitrogen fertilizer was used as urea (46.5% N) in two splits; that is, 2/3 were added and mixed in dry soil before flooding of irrigation water and the other 1/3 was added at panicle initiation stage. Experimental design was spilt plot design, with sowing dates as main and varieties as sub plot treatments. Results indicated that early date of sowing (April 20^th) was superior to other dates of sowing for MT, PI, HD, number of tillers /M^2, (plant height and root length) at PI and HD stage, chlorophyll content, number of days up to PI and HD, leaf area index, sink capacity , spikelets-leaf area ratio, number of grains / panicle, panicle length(cm), 1000-grain weight (g), number of panicles/ M ², panicle weight (g) and grain yield (ton/ha). Sterility percentage was the lowest in sowing 20^th April. 1^st of June, sowing gave the lowest with all traits under study. H1 hybrid rice variety surpassed other varieties for all characters studied except for number of days to PI and HD.

Key words: Sowing dates, hybrid rice, physiological characters and yield.

International Journal of Plant Breeding and Genetics ISSN 5756-2148 Vol. 6 (9), pp. 001-005, September, 2019. © International Scholars Journals

Full Length Research Paper

Molecular analysis of type III polyketide synthase (PKS) gene family from Zingiber officinale Rosc

Radhakrishnan E. K. and E. V. Soniya*

Plant Molecular Biology Division, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India-695 014.

Accepted 20 March, 2019

Abstract

Enzymes of the type III polyketide synthase family is considered to have significant role in biosynthesis of structurally diverse polyketide scaffolds in Zingiber officinale. Genome wide analysis of polyketide synthase gene family in Z. officinale identified partial sequences of six members. Comparative sequence analysis showed that four of them ZoPKS2, 3, 4 and 6 were novel forms as revealed by the significant variations at the highly conserved regions. Phylogenetic analysis also showed separate clustering of the novel forms along with the non-chalcone forming PKSs. This sequence identified in the study forms the first and basic information of the PKS gene family from the Zingiberaceae.

Key words: Zingiber officinale, CHS, PKS, multigene family, phylogenetic analysis.

International Journal of Plant Breeding and GeneticsISSN5756-2148 Vol. 6 (8), pp. 001-014, August, 2019. © International Scholars Journals

Full Length Research Paper

Combining ability and heritability for yield, yield related and fiber quality traits in cotton (Gossypiumspp.) at Werer, Ethiopia

¹Merdasa Balcha, ²Wassu Mohammedand and Zerihun Desalegn

¹Werer Agricultural Research Center, Ethiopia, P.O.Box: 2003, Werer, Ethiopia.

²School of Plant Sciences, Haramaya University, Ethiopia, P.O.Box: 138, Dire Dawa, Ethiopia.

³Ethiopian Institute of Agricultural Research, Ethiopia, P.O.Box: 2003, Addis Ababa, Ethiopia.

Corresponding Author E-mail: [email protected]

Accepted 29 July, 2018

Abstract 

Thirty six genotypes were evaluated for seventeen traits in 2017 at Werer Agricultural Research Center. The experiment was laid out in 6 x 6 simple lattice design. Results of analysis of variance showed the presence of significant differences among genotypes for all traits except stand count and uniformity index. Mean squares of lines for general combining ability was significant for all traits, while specific combining ability was significant for days to initial boll opening, number of bolls per plant, seed cotton yield, lint yield and fiber strength. Line 10 and L16 exhibited positive and significant maximum GCA effects for seed cotton yield and lint yield, while L1 and L2 had positive and significant GCA effects for fiber length, fiber strength and fiber elongation. Hybrids L4 x T2, L13 x T1 and L9 x T2 were identified as good specific combinations for seed cotton yield, lint yield and ginning percentage. High heritability in broad-sense were exhibited for almost traits. Generally, selection high performing lines for lint yield and related traits followed by crossing with testers is possible to obtain commercial cotton hybrids.

Keywords: Combining ability, hybrids, lint yield, seed cotton yield, heritability.

International Journal of Plant Breeding and Genetics ISSN 5756-2148 Vol. 6 (8), pp. 001-007, August, 2019. © International Scholars Journals

Full Length Research Paper

Performance of exotic mulberry (Morus spp.) germplasm on growth and yield traits in Indian condition

Amalendu Tikader* and Chandrakant Kamble

Central Sericultural Germplasm Resources Centre, Hosur – 635 109, Tamil Nadu, India.

Accepted 15 May, 2019

Abstract

Exotic mulberry germplasm accessions were evaluated under tropical dry agro-climatic condition of India. Mulberry accessions showed great extent of variation in growth and yield traits. The analysis of variance revealed significant differences in all growth and yield traits. The interaction between accession x season was significant for all traits except number of branches per plant, total shoot length and Internodal distance. The coefficient of variation was maximum in leaf yield per plant followed by total shoot length and minimum in leaf moisture content. The relationship among different growth traits indicated that leaf yield is depended on number of branches per plant and total shoot length. The CIMMYT selection index was used to identify the best accessions studied in the experiment. The divergence analysis using R statistics grouped the accession into 7 clusters of which maximum numbers of accessions were in cluster IV and minimum in cluster V. Inter- cluster distance was maximum in between cluster V and VII whereas minimum in cluster IV and I. The intra cluster distance was higher in cluster VI and minimum in cluster V. The diversity among the accessions measured by D² values may be used for selection of exotic mulberry accessions for crop improvement.

Key words: Genetic diversity, mulberry, exotic germplasm, yield traits, cluster analysis.

International Journal of Plant Breeding and Genetics ISSN 5756-2148 Vol. 6 (8), pp. 001-005, August, 2019. © International Scholars Journals

Full Length Research Paper

Evaluation of antibacterial properties of Chebulic myrobalan (fruit of Terminalia chebula Retz.) extracts against methicillin resistant Staphylococcus aureus

Anwesa Bag¹, Subir Kumar Bhattacharyya ¹, Premananda Bharati² Nishith Kumar Pal³ and Rabi Ranjan Chattopadhyay¹*

¹Agricultural and Ecological Research Unit, Indian Statistical Institute, 203, Barrackpore Trunk Road, Kolkata – 700 108, India.

²Biological Anthropology Unit, Indian Statistical Institute, 203, Barrackpore Trunk Road, Kolkata – 700 108, India.

³Department of Bacteriology and Serology, Calcutta School of Tropical Medicine, Kolkata – 700 073, India.

Accepted 18 April, 2019

Abstract

The aim of this study was to evaluate the possible antibacterial potential of Chebulic myrobalan extracts (cold aqueous, hot aqueous and ethanol) against multi-drug resistant bacterial pathogens. For this purpose both clinical isolates (methicillin resistant Staphylococcus aureus and trimethoprim-sulphamethoxazole resistant uropathogenic Escherichia coli) and standard type control strains were tested in this study. Antibacterial potency of the extracts was tested by standard growth inhibitory assay methods. All the tested extracts showed to varying degrees of strain specific antibacterial potential against tested strains of which ethanol extract showed superior activity against E. coli and hot aqueous extract against S. aureus. Cold aqueous extract exhibited the least antibacterial activity against all the tested strains. These promising findings suggest to antibacterial activity of the plant material exhibited bioactive compounds against multi-drug resistant bacterial pathogens and serving them as an alternative antimicrobial agent against diseases caused by these organisms.

Key word: Chebulic myrobalan, MRSA, Escherichia coli, antibacterial activity.