Capsicum is a nutritious vegetable and its cultivation in farms is getting popular in Bangladesh. Although many efforts have lain to explore better yielding and nutritionally rich cultivars with suitable modern cultiv...Capsicum is a nutritious vegetable and its cultivation in farms is getting popular in Bangladesh. Although many efforts have lain to explore better yielding and nutritionally rich cultivars with suitable modern cultivation techniques but still have to find the desired outcome. Thus, it’s necessary to conduct further research to identify the high-yielding and nutritious capsicum cultivars in Bangladesh. An experiment was conducted from July 2021 to June 2022 at the Bangladesh Institute of Research and Training on Applied Nutrition (BIRTAN) research field with three cultivars of capsicum: B<sub>0</sub> = California Wonder, B<sub>1</sub> = BARI Misti Morich-1 and B<sub>2</sub> = BARI Misti Morich-2 and three mulching: T<sub>0</sub> = No mulching, T<sub>1</sub> = Water hyacinth, T<sub>2</sub> = Poly Mulching in randomized complete block design with three replications to identify better quality capsicum cultivar and suitable mulching material. Among cultivars the BARI Misti Morich-2 (B<sub>2</sub>) showed increased agronomic parameters like number of branches and effective branches per plant, leaves length and width, consequently yield and yield contributing traits were also enhanced like fruits per plant, fruit length, fruit diameter and yield per plant (25.97%, 4.54%, 3.64% and 21.43%, respectively). Poly Mulching (T<sub>2</sub>) increased agronomic traits, yield traits and yield (0.61 kg) than BARI Misti Morich-1 (T<sub>1</sub>). The combined effect of B<sub>2</sub>T<sub>2</sub> increased the number of branches per plant, effective branches per plant, leaves length and breadth by 40%, 90%, 15.57% and 26.22%, respectively, hence resulting in an increased yield of 20%. BARI Misti Morich-2 cultivar showed an increase in Fe, Zn and Vitamin-C content of 26.24% and 23.10%, 8.82% and 5.14%, and 6.03% and 5.74% than B0 and B1 cultivars, respectively. Therefore, BARI Misti Morich-2 exhibited the improved agronomic, yield and nutritional traits of capsicum under poly mulching among other cultivars in Bangladesh.展开更多
辣椒作为常异花授粉作物,在生产实际中利用核不育两用系进行制种是理想手段。α-微管蛋白(α-tubulin)是细胞骨架的主要成分,与植物育性相关。以辣椒核不育两用系AB114为材料,采用扩增片段长度多态性(amplified fragment length polymor...辣椒作为常异花授粉作物,在生产实际中利用核不育两用系进行制种是理想手段。α-微管蛋白(α-tubulin)是细胞骨架的主要成分,与植物育性相关。以辣椒核不育两用系AB114为材料,采用扩增片段长度多态性(amplified fragment length polymorphism,AFLP)技术得到蕾期基因表达差异片段,利用cDNA末端快速扩增(rapid-amplifi cation of cDNA ends,RACE)技术克隆AFLP-F-57全长。ORF finder分析显示,该基因具有1350 bp的最大开放阅读框,编码450个氨基酸;经Standard Protein BLAST和NCBI Conserved Domain Search鉴定,该基因编码蛋白与烟草、辣椒的α-微管蛋白具有高度相似性,均含有α-tubulin保守结构域,故将其命名为CaTUA基因;RT-PCR分析表明,与可育株相比,不育株中该基因的表达量随花蕾发育呈现下降趋势,于大花蕾时期差异显著;系统进化树分析发现CaTUA蛋白与烟草TUA蛋白序列的进化距离较近。研究初步分析了CaTUA基因的功能,为进一步揭示辣椒核不育与CaTUA的关系提供了理论依据。展开更多
辣椒红色素是目前全球销量最大的纯天然可食用色素,培育高辣椒红色素品种为辣椒产业重要任务。通过对255份一年生栽培种辣椒核心种质的辣椒红素含量进行全基因组关联分析(genome-wide association study,GWAS),在第1、2、3、5、6、8、9...辣椒红色素是目前全球销量最大的纯天然可食用色素,培育高辣椒红色素品种为辣椒产业重要任务。通过对255份一年生栽培种辣椒核心种质的辣椒红素含量进行全基因组关联分析(genome-wide association study,GWAS),在第1、2、3、5、6、8、9、10、11和12号染色体均关联到与辣椒红素含量显著相关的区间,关联区间内共包括93个基因,根据功能注释和转录表达数据预测了3个影响辣椒果实中辣椒红素含量的候选基因。通过对高辣椒红色素材料Pep-340、低辣椒红色素材料Pep-276构建的F2群体进行混合分组分析法-测序(bulked segregant analysis-sequencing,BSA-seq)分析,在第1、3、5和10号染色体定位到与辣椒红色素含量相关区间,其中第3和5号染色体上的定位区间与GWAS分析中的显著相关区间相近或重合;利用这两个区间的In Del分子标记,进行遗传连锁分析,将调控辣椒红色素含量基因定位在3号染色体的q CC3.1,物理位置为22.8~25.9 Mb,其中含有99个基因,根据功能注释和转录组分析,预测了4个影响辣椒果实中辣椒红色素含量的候选基因Capana03g001314、Capana03g001325、Capana03g001334和Capana03g001387。研究结果为调控辣椒中辣椒红色素含量基因精细定位及分子标记辅助选择育种奠定基础。展开更多
文摘Capsicum is a nutritious vegetable and its cultivation in farms is getting popular in Bangladesh. Although many efforts have lain to explore better yielding and nutritionally rich cultivars with suitable modern cultivation techniques but still have to find the desired outcome. Thus, it’s necessary to conduct further research to identify the high-yielding and nutritious capsicum cultivars in Bangladesh. An experiment was conducted from July 2021 to June 2022 at the Bangladesh Institute of Research and Training on Applied Nutrition (BIRTAN) research field with three cultivars of capsicum: B<sub>0</sub> = California Wonder, B<sub>1</sub> = BARI Misti Morich-1 and B<sub>2</sub> = BARI Misti Morich-2 and three mulching: T<sub>0</sub> = No mulching, T<sub>1</sub> = Water hyacinth, T<sub>2</sub> = Poly Mulching in randomized complete block design with three replications to identify better quality capsicum cultivar and suitable mulching material. Among cultivars the BARI Misti Morich-2 (B<sub>2</sub>) showed increased agronomic parameters like number of branches and effective branches per plant, leaves length and width, consequently yield and yield contributing traits were also enhanced like fruits per plant, fruit length, fruit diameter and yield per plant (25.97%, 4.54%, 3.64% and 21.43%, respectively). Poly Mulching (T<sub>2</sub>) increased agronomic traits, yield traits and yield (0.61 kg) than BARI Misti Morich-1 (T<sub>1</sub>). The combined effect of B<sub>2</sub>T<sub>2</sub> increased the number of branches per plant, effective branches per plant, leaves length and breadth by 40%, 90%, 15.57% and 26.22%, respectively, hence resulting in an increased yield of 20%. BARI Misti Morich-2 cultivar showed an increase in Fe, Zn and Vitamin-C content of 26.24% and 23.10%, 8.82% and 5.14%, and 6.03% and 5.74% than B0 and B1 cultivars, respectively. Therefore, BARI Misti Morich-2 exhibited the improved agronomic, yield and nutritional traits of capsicum under poly mulching among other cultivars in Bangladesh.
文摘辣椒作为常异花授粉作物,在生产实际中利用核不育两用系进行制种是理想手段。α-微管蛋白(α-tubulin)是细胞骨架的主要成分,与植物育性相关。以辣椒核不育两用系AB114为材料,采用扩增片段长度多态性(amplified fragment length polymorphism,AFLP)技术得到蕾期基因表达差异片段,利用cDNA末端快速扩增(rapid-amplifi cation of cDNA ends,RACE)技术克隆AFLP-F-57全长。ORF finder分析显示,该基因具有1350 bp的最大开放阅读框,编码450个氨基酸;经Standard Protein BLAST和NCBI Conserved Domain Search鉴定,该基因编码蛋白与烟草、辣椒的α-微管蛋白具有高度相似性,均含有α-tubulin保守结构域,故将其命名为CaTUA基因;RT-PCR分析表明,与可育株相比,不育株中该基因的表达量随花蕾发育呈现下降趋势,于大花蕾时期差异显著;系统进化树分析发现CaTUA蛋白与烟草TUA蛋白序列的进化距离较近。研究初步分析了CaTUA基因的功能,为进一步揭示辣椒核不育与CaTUA的关系提供了理论依据。
