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A. J. Worland
John Innes Centre
GeneChromosomeGeneticsBotanyBiology
35Publications
24H-index
3,668Citations
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Publications 33
Newest
#1María Rosa Simón (UNLP: National University of La Plata)H-Index: 17
#2A. J. Worland (JIC: John Innes Centre)H-Index: 24
Last. Paul C. Struik (WUR: Wageningen University and Research Centre)H-Index: 36
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Chromosomal location of resistance to Mycosphaerella graminicola was studied in substitution lines of resistant Triticum genotypes into the (susceptible) cultivar Chinese Spring (T. aestivum ). (Moderately) resistant genotypes for which substitution lines were available were tested in a first screening. We selected a synthetic hexaploid wheat (Synthetic 6x; T. dicoccoides x T. tauschii ), T. spelta and the wheat (T. aestivum ) cultivars Cheyenne and Cappelle-Desprez. In a second screening the mo...
7 CitationsSource
#1Vinesh Verma (JIC: John Innes Centre)H-Index: 1
#2M. J. Foulkes (University of Nottingham)H-Index: 17
Last. John W. Snape (JIC: John Innes Centre)H-Index: 52
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The timing of flag leaf senescence (FLS) is an important determinant of yield under stress and optimal environments. A doubled haploid population derived from crossing the photo period-sensitive variety Beaver,with the photo period-insensitive variety Soissons, varied significantly for this trait, measured as the percent green flag leaf area remaining at 14 days and 35 days after anthesis. This trait also showed a significantly positive correlation with yield under variable environmental regimes...
173 CitationsSource
#1H. Muranty (INRA: Institut national de la recherche agronomique)H-Index: 3
#2J. Jahier (INRA: Institut national de la recherche agronomique)H-Index: 15
Last. C. N. Law (JIC: John Innes Centre)H-Index: 11
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Moderate resistance to eyespot was first incorporated in the variety Cappelle-Desprez (CD). Later the gene Pch1, which could confer a higher level of resistance, was introduced from Aegilops ventricosa. However Pch1-carrying varieties can sustain significant eyespot-induced yield losses in severe attack situations. A strategy to further enhance the resistance of wheat is by pyramiding Pch1 and the genes for resistance in CD. The first requirement to achieve this is a better understanding of the ...
18 CitationsSource
Summary The Chinese wheat variety 'CN0004', described to carry the new GA insensitive dwarfing gene Rht21 on chromosome 2AL was used for test crosses with the GA sensitive variety 'Bersee' and its isogenic lines 'Bersee iso Rht-Blb' {Rhtl) and 'Bersee iso Rht-Dlb' (Rht2). Performing the GA seedlings test in F2 it could be demonstrated that 'CN0004' is carrying two genes for GA insensitivity allelic to Rht-Bl and Rht-Dl which are located on chromosomes 4B and 4D, respectively. Homoeologous relati...
1 Citations
#1Y. ZhouH-Index: 1
#2W. LiH-Index: 1
Last. A. J. Worland (JIC: John Innes Centre)H-Index: 24
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Heading time (HT, days from sowing to heading) is an important agronomic trait in rice. Physiologically, HT can be divided into two stages: vegetative growth time (VGT) and reproductive growth time (RGT). A number of studies for mapping QTLs conferring HT in rice have been reported, but none of them has tried to map HT-related QTLs based on their component traits (VGT and RGT). The present study aims to map HT-related QTLs in rice according not only to the performance of HT, but also the perform...
33 CitationsSource
#1John W. Snape (JIC: John Innes Centre)H-Index: 52
#2K. Butterworth (JIC: John Innes Centre)H-Index: 1
Last. A. J. Worland (JIC: John Innes Centre)H-Index: 24
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To maximise yield potential in any environment, wheat cultivars must have an appropriate flowering time and life cycle duration which ‘fine-tunes’ the life cycle to the target environment. This in turn, requires a detailed knowledge of the genetical control of the key components of the life cycle. This paper discusses our current knowledge of the genetical control of the three key groups of genes controlling life-cycle duration in wheat, namely those controlling vernalization response, photoperi...
175 CitationsSource
#1María Rosa Simón (UNLP: National University of La Plata)H-Index: 17
#2A. J. Worland (JIC: John Innes Centre)H-Index: 24
Last. Paul C. Struik (WUR: Wageningen University and Research Centre)H-Index: 36
view all 4 authors...
Chromosomal location of resistance to two virulent Argentinean isolatesof Septoria tritici was studied in two wheat (Triticum aestivumL.) cultivars (Cappelle-Desprez & Cheyenne), a synthetic hexaploid(Synthetic 6x) and Triticum spelta in seedlings. Substitution lines of these(resistant or moderately resistant) genotypes into (susceptible) ChineseSpring were selected from a previous screening. For Synthetic 6x,resistance was clearly located in chromosome 7D. Chinese Spring with the7D chromosome s...
17 CitationsSource
#1A. M. CastroH-Index: 10
#2S. RamosH-Index: 3
Last. E. Suárez (INTA: International Trademark Association)H-Index: 4
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Two sets of intervarietal chromosome substitution lines in the recipient,susceptible cultivar ‘Chinese Spring’ were screened to identify the wheat chromosomes involved with antixenosis, antibiosis and tolerance resistance to greenbug and Russian wheat aphid. The amphiploid ‘Synthetic’ and the cultivar ‘Hope’ were the donor parents. Antixenosis, antibiosis and tolerance were evaluated with conventional tests in controlled environmental conditions using a clone of greenbug biotype C and a clone of...
20 CitationsSource
#1Andreas BörnerH-Index: 43
#2Viktor KorzunH-Index: 46
Last. W. E. Weber (MLU: Martin Luther University of Halle-Wittenberg)H-Index: 15
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Using the marker information of 275 F2 plants quantitative traits determining morphological and yield characters were studied analyzing F3progenies grown in four different experiments at three sites. The map constructed contains 113 markers including the major dwarfing gene Ddw1 with an average distance of about 10 cM between adjacent markers. Of the 21 QTLs detected ten were found to map on chromosome 5RL in the region of Ddw1. Beside the expected effects on plant height and peduncle length tha...
34 CitationsSource
#1Dingzhong TangH-Index: 26
#2Weiren WuH-Index: 17
Last. A. J. Worland (JIC: John Innes Centre)H-Index: 24
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A large F2 and a RI population were separately derived from a cross between two indica rice varieties, one of which was highly resistant to bacterial leaf streak (BLS) and the other highly susceptible. Following artificial inoculation of the RI population and over 2 years of testing, 11 QTLs were mapped by composite interval mapping (CIM) on six chromosomes. Six of the QTLs were detected in both seasons. Eight of the QTLs were significant following stepwise regression analysis, and of these, 5 w...
43 CitationsSource
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