Establishment on Isolated Microspore Culture Optimized System for Restorer of New Cytoplasmic Male Sterile (NER) of Brassica napus L.
[Objective]The aim was to establish optimized system for NER isolated microspore culture of Brassica napus L..[Method]Twenty varieties of NER of Brassica napus were grown under uncontrolled temperature and light conditions,and their isolated microspore from anthers were used as explants in vitro culture.The influencing factors of microspore culture were preliminarily studied.[Result]The difference of genotypes was important influencing factors to embryoid yield.The embryoid yield increased by supplementing with 6-BA and NAA,culturing in solidliquid double layer medium with activated charcoal;The difference was not significant of embryoid yield between culturing in medium supplemented with colchicines and the CK.The rates of cotyledonous embryoids directly developed into normal plantlets increased through enriching with 0.1-0.2 mg/L NAA and being treated on slim illumination two days before being inducted into normal plantlets.[Conclusion]The technical system of microspore culture of restorer of new cytoplasmic male sterile (NER) was established,which and lays a foundation for accelerating genotype purification of NER introgressive line.
Braasica napus L.Restorer of new cytoplasmic male sterile (NER)Isolated micrcepore cultureTechnical system
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