Effects of seed vigour and the duration of cold acclimation on freezing tolerance of winter oilseed rape

Ghassemi‐Golezani, Kazem; Khomari, Saeid; Valizadeh, M; Alyari, H.

doi:10.15258/sst.2008.36.3.26

Cited by 14 publications

(7 citation statements)

References 16 publications

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“…1) can be attributed to variation in genetic constitution, which may strongly influence seed vigour (Perry, 1980;GhassemiGolezani et al, 2010). Field performance of high vigor seeds are much better than that of low vigor seeds, ensuring rapid, uniform and satisfactory stand establishment under a wide range of environmental conditions (Hampton and Scott, 1982;Ghassemi-Golezani et al, 1996a, b;2008b).…”

Section: Discussionmentioning

confidence: 99%

Development of Seed Physiological Quality in Winter Oilseed Rape (Brassica napus L.) Cultivars

Ghassemi‐Golezani

Sheikhzadeh-Mosaddegh

Shakiba

et al. 2011

Not Bot Hort Agrobot Cluj

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Stage of maturity at harvest is one of the most important factors that can influence the quality of seeds. This research was carried out in [2008][2009] to evaluate the development of physiological seed quality in three winter oilseed rape (Brassica napus L.) cultivars ('Modena' , 'Opera' and 'SLM 046 '). Seeds were harvested serially in 9-10 stages during their development and maturation. Maximum seed weight (mass maturity) was achieved at 48-54 days after flowering, when seed moisture content was 41-50%. However, maximum seed quality as measured by seed viability, germination percentage, germination rate and seedling dry weight was obtained 10 to 22 days after mass maturity. Thereafter, seed quality of all cultivars was started to decrease, due to ageing. Maximum germination rate of 'SLM 046 ' and maximum seedling dry weight of 'Opera' were significantly higher than those of other two cultivars. These variations in seed quality parameters were attributed to differences in genetic constitution among oilseed rape cultivars. It was concluded that high quality seeds of winter oilseed rape cultivars could be produced with 14-16% moisture content, which is suitable for direct and mechanical harvesting, threshing and storage without further drying.

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Section: Discussionmentioning

confidence: 99%

Development of Seed Physiological Quality in Winter Oilseed Rape (Brassica napus L.) Cultivars

Ghassemi‐Golezani

Sheikhzadeh-Mosaddegh

Shakiba

et al. 2011

Not Bot Hort Agrobot Cluj

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“…In brief, at a three-leaf stage the seedlings were exposed to temperatures raised between 3°C and 5°C, then gradually decreased to -12°C for 4 hours. Chlorophyll fluorescence parameters were measured as an indicator of photosynthetic energy that responds to alters in PSII photochemistry according to ( Ghassemi-Golezani et al., 2008 ). Pearson correlation analysis between the chlorophyll fluorescence-related traits; F 0 , F V , F M , F V /F 0, and F V /F M under low-temperature tolerance before and two hours after the treatment were calculated using ‘‘Hmisc’’ packages in R, the ‘‘PerformanceAnalytics’’ packages was used for drawing scatter plots.…”

Section: Methodsmentioning

confidence: 99%

Genetic diversity and population structure assessment of Western Canadian barley cooperative trials

et al. 2023

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Studying the population structure and genetic diversity of historical datasets is a proposed use for association analysis. This is particularly important when the dataset contains traits that are time-consuming or costly to measure. A set of 96 elite barley genotypes, developed from eight breeding programs of the Western Canadian Cooperative Trials were used in the current study. Genetic diversity, allelic variation, and linkage disequilibrium (LD) were investigated using 5063 high-quality SNP markers via the Illumina 9K Barley Infinium iSelect SNP assay. The distribution of SNPs markers across the barley genome ranged from 449 markers on chromosome 1H to 1111 markers on chromosome 5H. The average polymorphism information content (PIC) per locus was 0.275 and ranged from 0.094 to 0.375. Bayesian clustering in STRUCTURE and principal coordinate analysis revealed that the populations are differentiated primarily due to the different breeding program origins and ear-row type into five subpopulations. Analysis of molecular variance based on PhiPT values suggested that high values of genetic diversity were observed within populations and accounted for 90% of the total variance. Subpopulation 5 exhibited the most diversity with the highest values of the diversity indices, which represent the breeding program gene pool of AFC, AAFRD, AU, and BARI. With increasing genetic distance, the LD values, expressed as r2, declined to below the critical r2 = 0.18 after 3.91 cM, and the same pattern was observed on each chromosome. Our results identified an important pattern of genetic diversity among the Canadian barley panel that was proposed to be representative of target breeding programs and may have important implications for association mapping in the future. This highlight, that efforts to identify novel variability underlying this diversity may present practical breeding opportunities to develop new barley genotypes.

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“…Podobně Van de Venter et al (1993) prokázali, že test vitality osiva pšenice s použitím nízké teploty průkazně koreloval s polní vzcházivostí. Ghassemi-Golezani et al (2008) zjistili při testování vitality řepky olejné průkazný vztah mezi vitalitou semen a mrazuvzdorností. Honsová (2019) uvádí, že se ve stresových podmínkách, v závislosti na vitalitě semen máku, projevily rozdíly v kvalitě osiva.…”

Section: úVodunclassified

Testování vitality semen polních plodin

Středa¹,

Jovanović²,

Belcredi³

et al. 2022

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Effects of seed vigour and the duration of cold acclimation on freezing tolerance of winter oilseed rape

Cited by 14 publications

References 16 publications

Development of Seed Physiological Quality in Winter Oilseed Rape (Brassica napus L.) Cultivars

Development of Seed Physiological Quality in Winter Oilseed Rape (Brassica napus L.) Cultivars

Genetic diversity and population structure assessment of Western Canadian barley cooperative trials

Testování vitality semen polních plodin

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