TAILIEUCHUNG - Genetic repairing through storage of gamma irradiated seeds in inbred maize (Zea mays L.)

Gamma irradiation can induce beneficial as well as deleterious impacts on chromosome behavior in crop plants. The cytogenetic changes occurring due to the storage of inbred seeds after gamma irradiation in the somatic and gametic cells of Zea mays L. were investigated in this study. | Turk J Biol 33 (2009) 195-204 © TÜBİTAK doi: Genetic repairing through storage of gamma irradiated seeds in inbred maize (Zea mays L.) Girjesh KUMAR, Prashant KUMAR RAI Plant Genetics Laboratory, Department of Botany, University of Allahabad, Allahabad-211002, ., INDIA Received: Abstract: Gamma irradiation can induce beneficial as well as deleterious impacts on chromosome behavior in crop plants. The cytogenetic changes occurring due to the storage of inbred seeds after gamma irradiation in the somatic and gametic cells of Zea mays L. were investigated in this study. A wide spectrum of chromosomal anomalies was encountered in somatic and gametic cells of maize that are gamma irradiated, stored (aged), and treated with a combination of both of these treatments. Gamma rays and ageing treatments induced a number of chromosomal anomalies independently, but a combination of the 2 treatments suppressed the frequency of chromosomal anomalies considerably in somatic as well as gametic cells of maize. It is evident from our study that the decrease in mitotic index was inversely proportional to the increase in doses in all the sets of gamma rays and ageing treatments. The conclusion drawn from our study is that individual treatment of gamma rays induced the highest percentage of chromosomal abnormalities, followed by the combination treatment of ageing and gamma rays, and the least number of abnormalities were induced by the individual treatment of ageing. Hence, the combination treatment proved to be better in the mechanism of genetic repairing, which is discussed in the present study. Key words: Zea mays, gamma irradiation, storage, mitosis, meiosis, chromosomal anomalies Gamma radyasyonuna ve depolamaya maruz bırakılmış mısırlarının genetik tamiri Özet: Gamma radyasyonu faydalı etkilerinin yanısıra bu bitkinin kromozomlarında öldürücü etkiler de yapabilir. Bu çalışmada gamma radyasyonu sonrası depolanan Zea mays L. mısırlarında .

• Sinh học
• Zea mays
• Gamma irradiation
• Chromosomal anomalies
• Gametic cells of Zea mays L
• Genetic repairing
• Different levels of nutrients
• Dates of sowing
• Zea mays L
• Maize crop (Zea mays L
• Growth and yield of maize crop
• Irrigation regime and nitrogen level
• Nitrogen level on yield
• Yield attributes
• Summer Maize
• Seed borne mycoflora
• Simpson index of dominance
• Plant extracts against
• Seed treatment
• P fraction
• Maize (Zea mays L )
• P rich acid soils
• Fertilizer P additions on available P
• Mean performance
• Analysis of Variance
• Twelve characters studied in maize
• Genetic advance
• Quality protein maize
• Quantitative and quality traits
• Quality traits
• Nutrient management
• Growth and yield
• Maize (Zea mays)
• Yield of maize (Zea mays)
• Integrated nutrient management
• Growth and yield of maize
• Công nghệ sinh học
• Hệ thống tái sinh vitro
• Cây ngô Zea mays L
• Chuyển nạp Gen gạo protein giàu sắt
• Vi khuẩn Agrobacterium tumefaciens
• Công nghệ tách phôi
• Plant nutrient
• Popcorn Zea mays Everta
• Evaluate grain yield
• Yield components of popcorn
• Nitrogen rates
• Split plot arrangement
• Antioxidant enzymes
• Membrane permeability
• Reactive oxygen species
• Non enzymatic scavenging system
• Maize inbreds
• Ethyl methane sulfonate
• EMS treatment
• α amylase activities
• ZmDEF1 gene
• Sitophilus zeamais Motsch
• Maize Zea mays L
• Weed control
• Critical period
• Amaranthus retroflexus L
• Grain yield values
• The drought tolerant characteristics
• Upland local maize cultivars
• The north of Viet Nam
• Drought tolerance character
• Weed control in maize Zea mays L
• Rates of foramsulfuron
• Weed species
• Plant protection
• Ammonium sulfate
• plants
• Salt tolerance
• Oxidative stress
• Leaf water potential
• Salt stressed plants
• Heavy metal
• Salicylic acid
• SA mediated protection
• Phytochelatin synthesis
• Glutathione reductase
• Cytological abnormalities
• Meiotic abnormalities
• Mercury chloride
• Cadmium chloride
• Molecular cloning of stress induced genes
• Stress induced genes of maize
• PCR select cDNA subtraction technique
• Transcriptional control of stressregulated genes
• Nhân dòng gen
• Vùng Promoter Ubiquitin từ cây ngô
• Vùng phiên mã
• Kết quả nhân bản gen Ubi
• Tạp chí Khoa học Công nghệ Nông nghiệp
• Bài viết về nông nghiệp
• Ngô nếp Zea mays L
• Dòng thuần ngô nếp
• Giống ngô nếp lai mới
• ssp
• ceratina
• Tạp chí Công nghệ Sinh học
• Chuyển gen OsNAC45
• Cây ngô Zea mays
• Cấu trúc biểu hiện gen OsNAC45
• Dòng ngô tái sinh
• Combining ability
• Single cross hybrids of maize
• Maize (Zea mays L
• Specific combining ability studies
• Non additive gene action controlling
• MgO nano particle
• Magnesium oxide nano particles effects
• Utilization of soil phosphorus
• Soil phosphorus by maize