Scientific Officer, Breeding Division, Bangladesh Jute Research Institute (BJRI), Ministry of Agriculture, Manik Mia Avenue, Dhaka, Bangladesh.
Biomed Res Int. 2020 Jul 23;2020:9424725. doi: 10.1155/2020/9424725. eCollection 2020.
Anatomy of twelve tossa jute genotypes were performed for the variability, heritability, and genetic advance based on yield attributing six anatomical traits.
The experiments were carried out in field and laboratory including 12 tossa jute genotypes followed by RCB design in JAES, Manikganj, and Bangladesh Jute Research Institute, Dhaka, Bangladesh, during 2019-2020. . The tested genotypes were expected to perform better than controls in respect of anatomical characters contributing to fiber yield in tossa jute plants.
Five genotypes, i.e., Acc. 1318, Acc. 1306, JRO S, O-412-9-4, and O-0512-6-2 providing good results for the total fiber bundle area, trapezoid number, bark diameter, area of trapezoid, and bark thickness per transverse section in the anatomy of jute plants depicting the more variability ( > 0.01) as well as the possibility of tossa jute varietal development. These morphological and anatomical traits showing highly significant association () with one another and coupled with high genetic and phenotypic variance components; high heritability; high and moderate genetic advance and higher divergence in clustering ( ), and PCA would be used as criteria for selection and improvement for fiber yield of tossa jute.
The high variation and divergence for anatomical characters may be considered an effective selection method of genotypes for higher fiber yield comparing with controls. The genotypes, i.e., Acc. 1318, Acc. 1306, JRO (segregate), O-412-9-4, and O-0512-6-2 with good anatomical traits related to fiber yield could be used as parents in breeding program as well as direct variety development.
本研究基于 6 个与产量相关的解剖学性状，对 12 个长果种黄麻基因型进行了变异、遗传力和遗传进展分析。
本研究于 2019-2020 年在孟加拉国贾罕杰的 JAES 和孟加拉国达卡的孟加拉国黄麻研究所进行，采用田间和实验室实验，包括 12 个长果种黄麻基因型，采用随机区组设计。期望测试的基因型在长果种黄麻植物的纤维产量相关的解剖学特征方面优于对照。
Acc. 1318、Acc. 1306、JRO S、O-412-9-4 和 O-0512-6-2 这 5 个基因型在总纤维束面积、梯形数、树皮直径、梯形面积和横切面树皮厚度方面表现出较好的结果，在黄麻植物解剖结构中表现出更多的变异性（>0.01）以及长果种黄麻品种发展的可能性。这些形态和解剖学特征彼此之间表现出高度显著的相关性（），并且与高遗传和表型方差分量、高遗传力、高和中等遗传进展以及聚类（）中的高分离性相关，主成分分析（PCA）将作为选择和改良长果种黄麻纤维产量的标准。
与对照相比，解剖学特征的高变异和高分离性可以被认为是一种有效的基因型选择方法，用于提高纤维产量。Acc. 1318、Acc. 1306、JRO（分离株）、O-412-9-4 和 O-0512-6-2 这 5 个具有良好与纤维产量相关的解剖学特征的基因型可以作为亲本用于育种计划，也可以直接用于品种开发。
