An integrated study of grain development of wheat (cv. Hereward)

Shewry, Peter R.; Mitchell, R. A. C.; Tosi, Paola; Wan, Yongfang; Underwood, Claudia; Lovegrove, Alison; Freeman, J.; Toole, Geraldine A.; Mills, E.N. Clare; Ward, Jane L.

doi:10.1016/j.jcs.2011.11.007

Cited by 100 publications

(103 citation statements)

References 44 publications

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“…These studies and literature data (Bechtel et al, 2009;Shewry et al, 2012) indicated that wheat grain development can be divided into three phases. The first phase is the phase of cell division and expansion and lasts about two weeks.…”

Section: Discussionmentioning

confidence: 88%

LC-MS analysis reveals the presence of graminan- and neo-type fructans in wheat grains

Verspreet

Hansen

Dornez

et al. 2015

Journal of Cereal Science

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Section: Discussionmentioning

confidence: 88%

LC-MS analysis reveals the presence of graminan- and neo-type fructans in wheat grains

Verspreet

Hansen

Dornez

et al. 2015

Journal of Cereal Science

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“…This duration was then divided equally into three phases: initial, rapid and late, which correspond to the timing of endosperm cell division and enlargement, rapid grain filling, and maturation, respectively (Shewry et al, 2012). Average GFR during each phase and across all three Water content of individual grains was fitted over the accumulated thermal time after anthesis using a cubic function.…”

Section: Individual Grain Dry Matter and Water Accumulationmentioning

confidence: 99%

“…This critical period also overlaps with the ovary development within florets, and consequently affects individual grain weight (Calderini et al, 1999). Immediately after fertilization, endosperm cell division and enlargement take place (Shewry et al, 2012), an important process determining final individual grain weight (Brocklehurst, 1977).…”

Section: Introductionmentioning

confidence: 99%

Early anthesis and delayed but fast leaf senescence contribute to individual grain dry matter and water accumulation in wheat

Xie

Mayes

Sparkes

2016

Field Crops Research

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Abbreviations: chl, chlorophyll; Chl accum , accumulated chlorophyll content; Chl loss , duration of rapid chlorophyll loss; Chl per , duration of chlorophyll persistence; Chl tot , total duration of chlorophyll persistence and loss; o Cd, degree day; GA, green area; GA accum , accumulated green area; GA loss , duration of rapid green area loss; GA per , duration of green area persistence;GA tot , total duration of green area persistence and loss; GF, grain filling; GFR, grain filling rate; H 2 , broad sense heritability; LOD, logarithm of the odds; Max chl, maximum chlorophyll content; Max CLR, maximum chlorophyll loss rate; Max GALR, maximum green area loss rate; MWC, maximum water content of grain; QTL, quantitative trait locus; RIL, recombinant inbred line; TGW, thousand grain weight; t max , the time at maximum grain filling rate; t mwc , the time at maximum water content; WAR, grain water absorption rate; WLR, grain water loss rate. 2 AbstractThe physiological process of how anthesis time and leaf senescence patterns affect individual grain weight of wheat has only been partially elucidated. In this study, a recombinant inbred line mapping population of bread wheat (Triticum aestivum L. 'Forno') and its relative spelt (Triticum spelta L. 'Oberkulmer'), contrasting for phasic development and leaf senescence kinetics, was used to understand the physiological and genetic relationships among anthesis time, leaf senescence, grain filling processes, and individual grain weight. Phenotypic measurements were taken in the field over two growing seasons. The results showed that earlier anthesis and delayed leaf senescence were associated with larger grains. Furthermore, early anthesis and delayed but fast leaf senescence promoted grain filling rate (but shortened its duration), grain water absorption rate and maximum grain water content, while individual grain dry matter and water accumulation displayed strong relationships with individual grain weight. A total of 118 significant quantitative trait loci (QTL) were identified in this mapping population, including six QTL for anthesis dates, 24 for flag leaf senescence, 69 for grain filling traits, and 19 for individual grain weight. Frequent QTL coincidences between these traits were observed on chromosomes 2A, 3B, 4A, 4DL, 5A, 5B, 5DL and 7B. Analysis of allelic effects confirmed the above physiological relationships. Therefore, anthesis time and leaf senescence affect individual grain weight at least partly through their effects on individual grain dry matter and water accumulation, resulting from pleiotropy or tight gene linkages. Slightly early anthesis, and delayed but fast leaf senescence, can be used to maximize individual grain weight and yield potential in wheat.

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“…The phenolic acids (mainly ferulic acid) are linked to the b-glucans in the thick cell walls in the caryopsis of B. distachyon and their contents are similar to other cereals . In wheat, b-glucans are synthesized in the cell walls of aleurone as well as subaleurone layers (Shewry et al 2012). A particularly high concentration of the ferulic acid has been noted in the aleurone cell walls in wheat grain (Parker et al 2005); however, this phenolic compound is mainly linked not to b-glucans but to arabinoxylan synthesized in the aleurone and transfer area of caryopsis ).…”

Section: Variation In Dormancymentioning

confidence: 99%

Variability of breeding system, caryopsis microstructure and germination in annual and perennial species of the genus Brachypodium P. Beauv.

Kosina

Tomaszewska

2015

Genet Resour Crop Evol

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The basis of any patterns of variation in plant populations is the breeding system they express. In the genus Brachypodium, the breeding system ranges from autogamy in facultatively chasmogamic Brachypodium distachyon to allogamy in obligatory chasmogamic B. pinnatum. B. distachyon and B. sylvaticum appeared to be extremes with respect to dormancy and germination behaviour. Winter and facultatively biennial forms of the annual B. distachyon expressed an intermediate dormancy behaviour towards perennial species. Perennial species such as B. pinnatum, B. phoenicoides, B. rupestre and B. sylvaticum demonstrated allogamic behaviour and were highly dormant. The storage potential of hemicelluloses in endosperm cell walls and suberinphenolic synthesis in testa and pigment strand differ distinctly between annuals and perennials. The suberized glumellae base and caryopsis attachment restrict the growth of coleorhiza and can change growth relationships between root and coleoptile. Coleorhizal hairs facilitating water capillary adhesion to an embryo are developed in both types of Brachypodium species, but in perennial types they are less efficient. The pattern of development of coleorhizal hairs distinguishes Brachypodium species from members of the tribe Triticeae. The coleorhizal hairs are less developed in Triticeae. This trait is variable at the populational level, especially in heterozygous populations (B. phoenicoides). Both extremes in terms of dormancy, i.e. B. distachyon and B. sylvaticum, revealed inter-and intrapopulational variability of germination.

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An integrated study of grain development of wheat (cv. Hereward)

Cited by 100 publications

References 44 publications

LC-MS analysis reveals the presence of graminan- and neo-type fructans in wheat grains

LC-MS analysis reveals the presence of graminan- and neo-type fructans in wheat grains

Early anthesis and delayed but fast leaf senescence contribute to individual grain dry matter and water accumulation in wheat

Variability of breeding system, caryopsis microstructure and germination in annual and perennial species of the genus Brachypodium P. Beauv.

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