Comprehensive evaluation of high-oleic rapeseed (Brassica napus) based on quality, resistance, and yield traits: A new method for rapid identification of high-oleic acid rapeseed germplasm

Abstract

To scientifically evaluate and utilize high-oleic acid rape germplasm resources and cultivate new varieties suitable for planting in the Hunan Province, 30 local high-oleic acid rape germplasms from Hunan were used as materials. The 12 personality indices of quality, yield, and resistance were comprehensively evaluated by variability, correlation, principal component, and cluster analyses. The results of variability showed that except for oleic acid, the lowest coefficient of variation was oil content, which was 0.06. Correlation analysis showed that oil content was positively correlated with main traits such as yield per plant and oleic acid, which could be used in the early screening of high-oleic rape germplasm. The results of principal component analysis showed that the 12 personality indicators were integrated into four principal components, and the cumulative contribution rate was 62.487%. The value of comprehensive coefficient ‘F’ was positively correlated with the first, second, and fourth principal components and negatively correlated with the third principal component. Cluster analysis showed that 30 high-oleic rape germplasms could be divided into four categories consisting of 9 (30%), 6 (20%), 7 (23%), and 8 (27%) high-oleic rape germplasms, each with the characteristics of "high disease resistance", "high yield", "high protein", and "more stability". This study not only provides a reference basis for high-oleic rape breeding but also provides a theoretical basis for their early screening.

Carbohydrate metabolism enzymes and phenotypic characterization of diverse lines of the climate‐resilient food, feed, and bioenergy crop Camelina sativa

“…In PCA including enzymatic and agronomic data, yield, harvest index (HI) and seed oil content clustered together and were negatively correlated with dry matter biomass formation, height, onset of flowering and seed protein content. These correlations are in line with that of other crops including Brassica napus (Chang et al, 2022;Marjanović-Jeromela et al, 2011;Stolte et al, 2022) and the negative correlation between seed oil content and seed protein content reported for camelina (Vollmann et al, 2005). It is worth noting that the correlations observed were not only evident in developing seeds but also in leaves, underpinning that physiological process throughout development influence agronomic characters.…”

Prediction of Oleic Acid Content in Brassica napus L. Seeds Based on Hyperspectral Parameters at Seedling Stage: A New Method for Rapidly Screening Germplasm with Different Oleic Acid Content at Early Growth Stage of Rapeseed

“…This study not only provides a new method for the early screening of oleic acid in rapeseed but also provides the basis for the early screening of other quality traits in rapeseed. The previous research of our team showed that the oleic acid content of rapeseed is variously related to the quality of protein, erucic acid, and others [22]. In addition, part of spectral information in the rape seedling stage is sensitive to oil content and yield [23,24].…”

Comprehensive Evaluation and Selection of 192 Maize Accessions from Different Sources

“…Cluster analysis can categorise genetically similar germplasm into a single group, thereby elucidating taxonomic characteristics and relationships [35]. At a Euclidean distance of 17 (as illustrated in Figure 3), 192 maize accessions can be categorized into three principal groups, as detailed in Tables 4 and 5.…”