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首页> 外文期刊>Australian Journal of Crop Science >Development of two high yielding mutant varieties of mustard [Brassica juncea (L.) Czern.] through gamma rays irradiation
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Development of two high yielding mutant varieties of mustard [Brassica juncea (L.) Czern.] through gamma rays irradiation

机译：通过伽马射线辐射开发芥菜[Brassica juncea（L.）Czern。]的两个高产突变体

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Seeds of the well-adapted and popular mustard variety BARIsarisha-11 were irradiated with gamma ray using 60Co gamma cells. Irradiated seeds were grown as M1 during 2004-05. Selection was made from M2 generation during 2005-06. Desirable mutants were confirmed in M4 generation during 2007-08 and ten true breeding mutants having higher seed yield per plant with desirable morphological characters and yield attributes were selected. Selected mutants were evaluated along with the mother variety BARIsarisha-11 to select the most desirable ones considering higher seed yield and improved yield attributes under different replicated yield trials during 2008-09 to 2010-11. Results showed that two mutants, MM-10-04 and MM-08-04 selected from 700 Gy produced higher seed yield than BARIsarisha-11 in most of the trials conducted in 13 locations of Bangladesh. Mean of three years trial showed that seed yield of MM-10-04 and MM-08-04 was 2043 and 1893 kg ha–1, respectively, which was 23% and 14% higher than BARIsarisha-11 (mother variety). Mutants MM-10-04 and MM-08-04 also had the higher number of siliquae plant–1, 1000-seed weight and oil content than BARIsarisha-11. These two mutants also showed tolerance against Alternaria blight disease and lower aphid infestation. Results of the yield trials as well as screening against Alternaria blight disease and aphid carried out across the country indicated that MM-10-04 and MM-08-04 were suitable for widespread cultivation. Consequently, the National Seed Board of Bangladesh registered MM-10-04 and MM-08-04 in 2011 as two high yielding mustard varieties, Binasarisha-7 and Binasarisha-8, respectively for commercial cultivation.
机译：使用60Coγ细胞用γ射线辐照适应性强且广受欢迎的芥菜品种BARIsarisha-11的种子。在2004-05年间，辐照的种子生长为M1。从2005-06年度的M2代中进行选择。在2007-08年的M4代中确认了所需的突变体，并选择了十个真正的育种突变体，每株植物具有较高的种子产量，并具有理想的形态特征和产量属性。在2008-09至2010-11年间，在不同的重复产量试验中，考虑到更高的种子产量和更高的产量属性，对选定的突变体与母亲品种BARIsarisha-11进行了评估，以选择最理想的突变体。结果表明，在孟加拉国的13个地区进行的大多数试验中，从700 Gy中选择的两个突变体MM-10-04和MM-08-04产生的种子产量高于BARIsarisha-11。三年试验的平均值表明，MM-10-04和MM-08-04的种子产量分别为2043和1893 kg ha-1，比BARIsarisha-11（母本）高23％和14％。与BARIsarisha-11相比，突变体MM-10-04和MM-08-04的siliquae植物数量-1、1000种子重量和油含量更高。这两个突变体还显示出对枯草疫病和较低的蚜虫侵染的耐受性。在全国范围内进行的单产试验以及对白叶枯病和蚜虫的筛选结果表明，MM-10-04和MM-08-04适合广泛种植。因此，孟加拉国国家种子委员会在2011年将MM-10-04和MM-08-04注册为两个高产芥末品种，分别用于商业种植的Binasarisha-7和Binasarisha-8。

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