Polyploidy plays a crucial role in plant evolution. Brassica napus (2n = 38, AACC), the most important oil crop in the Brassica genus, is an allotetraploid that originated through natural doubling of chromosomes after the hybridization of its progenitor species, B. rapa (2n = 20, AA) and B. oleracea (2n = 18, CC). A better understanding of the evolutionary relationship between B. napus and B. r...

Silique length (SL) and seed weight (SW) are important yield-associated traits in rapeseed (Brassica napus). Although many quantitative trait loci (QTL) for SL and SW have been identified in B. napus, comparative analysis for those QTL is seldom performed. In the present study, 20 and 21 QTL for SL and SW were identified in doubled haploid (DH) and DH-derived reconstructed F2 populations in rap...

An Illumina Infinium array comprising 5306 single nucleotide polymorphism (SNP) markers was used to genotype 175 individuals of a doubled haploid population derived from a cross between Skipton and Ag-Spectrum, two Australian cultivars of rapeseed (Brassica napus L.). A genetic linkage map based on 613 SNP and 228 non-SNP (DArT, SSR, SRAP and candidate gene markers) covering 2514.8 cM was const...

In Section 6.5 of the First Report of the Science Review, the Panel drew attention to a lack of detailed knowledge of the potential impacts on biodiversity following the introduction of GM herbicide tolerant (GMHT) crops. Studies that systematically compared the effects of GMHT and conventional management regimes were available, but usually confined to small-scale studies at research stations o...

s. Therefore, more information is necessary concerning cauliflower transplant age. CHINESE CABBAGE [Brassica rapa L. SSP. PEKINENSIS (LOUR.)]. Kratky et al. (1982) in Hawaii found no significant differences in time to maturity, individual head weight, and total yield from Chinese cabbage transplants of 3, 4, 5, and 6 weeks of age. RAPE (Brassica napus ssp. OLEIFERA VAR. NAPUS). In a 3-year stud...

Amphidiploid species in the Brassicaceae family, such as Brassica napus, are more tolerant to environmental stress than their diploid ancestors.A relatively salt tolerant B. napus line, N119, identified in our previous study, was used. N119 maintained lower Na(+) content, and Na(+)/K(+) and Na(+)/Ca(2+) ratios in the leaves than a susceptible line. The transcriptome profiles of both the leaves ...

Jörg Durner, Andreas Thiel, and Peter Böger Lehrstuhl für Physiologie und Biochemie der Pflanzen, Universität Konstanz, D-7750 Konstanz, Bundesrepublik Deutschland Z. Naturforsch. 41c, 881 — 884 (1986); received May 26, 1986 Brassica napus, A trazine-Resistant M utants, Resistance Factors, Partition Coefficient Phenolic herbicides, being quite hydrophilic as compared to classical photosystem-II...

Unselected and sodium sulfate tolerant callus cultures of Brassica napus L. cv Westar were grown on media supplemented with mannitol, NaCl, or Na(2)SO(4). In all cases, growth of tolerant callus, measured on a fresh weight or dry weight basis, was greater than that of unselected callus, which was also subject to necrosis on high levels of salt. Tissue water potential became more negative in bot...

Brassica napus is an allotetraploid (AACC) formed from the fusion of two diploid progenitors, Brassica rapa (AA) and Brassica oleracea (CC). Polyploidy and genome-wide rearrangement during the evolution process have resulted in genes that are present as multiple homologs in the B. napus genome. In this study, three B. napus homologous genes encoding endoplasmic reticulum-bound sn-glycerol-3-pho...

MicroRNAs (miRNAs) and small interfering RNAs are important regulators of plant development and seed formation, yet their population and abundance in the oil crop Brassica napus are still not well understood, especially at different developmental stages and among cultivars with varied seed oil contents. Here, we systematically analyzed the small RNA expression profiles of Brassica napus seeds a...