Grain filling parameters in high-yielding ns wheat cultivars

Brdar, Milka; Kraljevic-Balalic, Marija; Kobiljski, Borislav

doi:10.2298/zmspn0814053b

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…Multivariate analysis indicated that grain weight, rate, and duration of grain filling were equally important in characterizing the grain filling period of the wheat genotypes; however, the sequence of their significance varied in different years due to diverse environmental conditions (Brdar et al, 2008). Genetic variation has been reported for grain filling duration and rate in wheat, and multivariate analysis of variance proved to be a useful tool in examining grain filling curves (Darroch and Baker, 1990).…”

Section: Introductionmentioning

confidence: 99%

Genetic analysis for grain filling duration in wheat using joint segregation analysis

Ullah¹,

Khan²,

Khan³

et al. 2014

Turk J Agric For

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Mixed inheritance analysis using joint segregation analysis was investigated in 6 basic populations (P 1 , F 1 , P 2 , BC 1 , BC 2 , and F 2 ) of 4 wheat crosses, i.e. Hashim-08 × LU-26, Farid-06 × Shafaq, Parula × Blue Silver, and TD-1 × D-97603, for grain filling duration during the crop season of 2011/2012. In cross Hashim-08 × LU-26, the duration of grain filling was controlled by 1 major gene and the additive-dominance-epistasis of polygenes (model D). In cross Farid-06 × Shafaq, the duration was controlled by additive-dominanceepistasis of 2 major genes (model B-1). However, in crosses Parula × Blue Silver and TD-1 × D-97603, the period of grain filling was under the control of 2 mixed groups of genes including additive-dominant-epistatic major genes plus the additive-dominant-epistasis of polygenes (model E and model E-1, respectively). In cross Hashim-08 × LU-26, the variation and heritability of the polygenes were greater than those of the major gene, whereas these components were low in cross Parula × Blue Silver. In crosses Farid-06 × Shafaq and TD-1 × D-97603, no polygenes were involved and the duration of grain filling was mainly under the influence of major genes. For the duration of grain filling, the maximum environmental variation revealed the influence of environment. Results suggested that due to its maximum heritability, early selection would be feasible in cross Hashim-08 × LU-26, while due to low heritability and variation in cross Parula × Blue Silver, delayed selection will be effective. Yield improvement based on duration of grain filling could be done through selection in later generations until the accumulation of the maximum favorable additive genes is achieved.

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Section: Introductionmentioning

confidence: 99%

Genetic analysis for grain filling duration in wheat using joint segregation analysis

Ullah¹,

Khan²,

Khan³

et al. 2014

Turk J Agric For

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“…Natural variation in the genetic makeup of wheat genotypes plays a significant role in determining yield and other agronomic traits. Seed yield in wheat can be defined on the basis of number of spikes per unit area, number of seed per spike, and seed weight (Brdar et al, 2008), and seed weight is a function of the duration and rate of seed filling (Whan et al, 1996). The duration and rate of seed filling has been found to be associated more with genotype rather than environmental factors (Darroch & Baker, 1995).…”

Section: Introductionmentioning

confidence: 99%

Genetic variation in transcriptional regulation of wheat seed starch content and its conversion to bioethanol

Mukherjee

Koramutla

Levin

et al. 2021

Food and Energy Security

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Starch deposited in the endosperm of cereal seeds serves as a source of food and animal feed, and as a substrate for bioethanol production. To gain insights into the molecular mechanisms underlying genetic variation in seed size and seed starch content, this study investigated transcriptional regulation of starch biosynthesis genes during seed filling in two wheat genotypes that exhibit contrasting phenotype in seed size. Our data showed that variation in starch accumulation during seed filling is closely associated with modulations in the expression patterns of specific starch biosynthesis genes including TaAGPL1, TaAGPS2, TaGBSSI, TaSSI, TaSSIV, TaSBEIIa, TaISA1, and TaISA3, as well as alterations in the activity of AGPase, GBSS, and SS enzymes. Consistently, the genotype that produces larger seeds that are characterized by a higher seed starch content generated higher amounts of fermentable sugars and bioethanol before and after fermentation, respectively. Since the amount of phenol per seed dry weight is higher in the genotype that produces smaller seeds, the prevalence of lower starch to bioethanol conversion efficiency in this genotype, despite the higher amount of glucose generated per bioavailable starch, suggests that the phenolic compounds interfere with the fermentation process and thereby affecting the bioethanol yield.

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Grain filling parameters in high-yielding ns wheat cultivars

Cited by 2 publications

References 2 publications

Genetic analysis for grain filling duration in wheat using joint segregation analysis

Genetic analysis for grain filling duration in wheat using joint segregation analysis

Genetic variation in transcriptional regulation of wheat seed starch content and its conversion to bioethanol

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