Typical Analysis Of Agronomic Traits Mutant Irce Sterile Line Y58S Radiation Mutagenesis

Plant Mutation technology is artificially by mutagenesis factor in a relatively shorttime to get there bioavailability value mutagenesis mutant plants mutagenesis techniquescondition simple, high mutation frequency can be constructed in a relatively short period oftime with a large number of mutants mutant population, is one of the important methods ofrice mutant library constructed.In this study, the temperature-sensitive dual-use sterile lineY58S light radiation mutagenesis, a systematic analysis of their mutants, andCharacteristics screened eight typical mutants were analyzed, aimed at obtaining moreexcellent traits the new CMS, while exploring new ways to get rice mutants.In this study, Y58S as material, with a total dose of400Gy, dose rate irradiation of60Co-r10Gy/min radiation mutagenesis after two consecutive times, won a total of62,751M2mutation offspring, which shoots morphological variation body2477, accounting for3.94%of the total population mutation M2plants. Including changes in the growth period,plant type, color, etc., and the presence or absence Mans15kinds of mutations mutants.Trait variation types with growth period, the higher mutation frequency leaves, leaf, stemmutation frequency Secondly, panicle type, plant type mutation frequency to aminimum.Mainly for the albino mutation leaves leaves, yellow leaves, zebra leaves, leavesand other types of discontinuous bleaching, except albino leaf chlorophyll content type dueto the low, reviving tillering stage after entering the automatic death no practicalsignificance, the other leaves mutant trait can be transferred as a marker DNA of rice,thereby improving cleaning efficiency in the process of hybrid rice breeding and seedproduction in, and to improve the purity of the seed.Mutations mainly for leaf curl leaf,wide and narrow leaves, leaf types, leaf curl type in the whole growth period performancecompact plant, dark green leaves, upright leaves, can be used as an important material forimproved plant type. Mutations in stem mainly purple stems and plant height becomeshigher type, mainly for seed traits mutated seeds have awns, mature grain brown and so on.Screening out Y5805S leaf curl mutants and mutants Y5807S purple stems twotypical mutants. Which Y5805S mutant leaf curl height shorter than the control Y58S20%panicles14-17spike, an increase of47.6%compared to the control Y58S, Zhang Yingangle, exposed stigma rate82.6%, of which bilateral exposure rate of49.4%, unilateralexposure rate of33.2%, outcrossing rate up to50%, an increase of12.4%yield per plantthan the control Y58S.Y5807S purple mutant stem height by2.3%higher than the controlY58S, Zhang Ying angle, exposed stigma rate of81.3%, which exposed the rate of47.8%bilateral, unilateral exposure rate of33.5%outcrossing rate up to50%grain weightincreased by5.1%compared with the control Y58S, plant production increased by11.6%compared with the control Y58S.