Genetic diversity of Brassica napus L. Germplasm from China and Europe assessed by some agronomically important characters

Abstract

The genetic diversity and relationships among 63 rapeseed accessions, including 34 Chinese, 22 Czech, 2 Swedish, 2 German, one French and 2 Canadian accessions, were evaluated by nine agronomically important characters in the field at Yangling, Shaanxi, China. Significant differences between Chinese and European group in plant height, setting position of the first primary branch, number of siliques of the terminal raceme, thousand seed weight and seed yield per plant were detected. There were significant variations in nine agronomic characters among the tested rapeseed accessions. Ward's minimum variance cluster analysis based on Mahalanobis distances on the raw data of nine agronomic characters clearly separated the European accessions from the Chinese ones. However, the Chinese accessions with erucic acid free and/or low glucosinolates could not be separated from those Chinese accessions with both high erucic acid and glucosinolates. In general, cluster analysis of the 63 accessions based on the selected agronomic characters was consistent with known pedigree information and geographic origin, as well as the previous RAPD results of these accessions. The European rapeseed could be important germplasm resources for enriching the genetic background of Chinese rapeseed, and vice versa.

Genetic Diversity in Indigenous Landraces of Brassica napus based on Morphological and Biochemical Characteristics using Multivariate Techniques

“…Present findings also revealed that geographic origin of the B. napus accessions had no significant effect on varied grouping of the genotypes. Therefore, cluster is mostly made on traits basis and not based on origin in various Brassica populations (Gupta and Pratap, 2007;Hu et al, 2007;Rabbani et al, 1998b;Dhillon et al, 1999). However, it is also not necessary that the accessions/genotypes grouping always made because of their morphological traits, though some researchers were inconsistent with this opinion.…”

New winter oilseed rape varieties – seed quality and morphological traits depending on sowing date and rate

“…It is influenced by genetic and environmental factors, as well as agricultural technology (Hu et al, 2007;Krzymański et al, 2009;Mert-Turk et al, 2008). Changes to the growing environment, as influenced by agronomic practice or the climate, are preventing the genetic potential from being realized (Berry & Spink, 2006).…”

Identification and cloning of GOLDEN2-LIKE1 (GLK1), a transcription factor associated with chloroplast development in Brassica napus L.

“…Brassica napus L. (AACC, 2n = 38) is one of the most important oilseed crops in the world, particularly in Canada, Europe, and China (Hu et al, 2007). To date, the consumption of vegetable oil has risen sharply in order to meet the demands of population growth and the developing global economy (Ahmad et al, 2015).…”