Evaluation of Genetic Diversity Among Bulgarian Winter Wheat (Triticum aestivum L.) Varieties During the Period 1925–2003 Using Microsatellites

2006 ◽  
Vol 53 (8) ◽  
pp. 1605-1614 ◽  
Author(s):  
Svetlana Landjeva ◽  
Viktor Korzun ◽  
Ganka Ganeva
Keyword(s):  
Genetic Diversity ◽  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L

scholarly journals GENETIC DIVERSITY OF WINTER WHEAT (Triticum aestivum L.)

2017 ◽  
Vol 6 (6) ◽  
pp. 1233-1236
Author(s):  
Andrea Pešková ◽  
Zdenka Gálová ◽  
Tímea Kuťka Hlozáková
Keyword(s):  
Genetic Diversity ◽  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L

The genetic diversity of group-1 homoeologs and characterization of novel LMW-GS genes from Chinese Xinjiang winter wheat landraces (Triticum aestivum L.)

2020 ◽  
Vol 61 (3) ◽  
pp. 379-389
Author(s):  
Xinkun Hu ◽  
Shoufen Dai ◽  
Yongliang Yan ◽  
Yaxi Liu ◽  
Jinbo Zhang ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Wheat Landraces ◽  
Group 1

Earliness and duration of grain fill in winter wheat

1992 ◽  
Vol 72 (1) ◽  
pp. 35-48 ◽  
Author(s):  
T. L. Housley ◽  
H. W. Ohm
Keyword(s):  
Genetic Diversity ◽  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Daily Temperature ◽  
Day Length ◽  
Effect Of Temperature ◽  
Average Daily Temperature ◽  
Influence Of Temperature On

The duration of grain fill in wheat (Triticum aestivum L.) is one of the determinants of kernel weight. The purpose of this research was to investigate the genetic diversity for duration of grain fill in winter wheat. In one experiment the genetic diversity for duration of grain fill and the influence of temperature on heading, anthesis and duration were assessed in 175 cultivars and lines of diverse plant type and origin planted at the Purdue Agronomy Research Center. The effect of temperature on the rate and duration of grain fill was further assessed in two cultivars, Fundulea and Caldwell, over 4 yr. In a second experiment Fundulea and Caldwell were grown in the field under altered day length (12, normal, 17 h) to manipulate date of anthesis. Duration of grain fill in the 175 entries averaged 28 ± 0.9 d. Heading occurred on 17 different dates, anthesis on 13 different dates and grain maturity on 17 different dates. The average daily temperature (ADT) during grain fill ranged between 21.2 and 22.5 °C. Comparisons of the ADT through grain fill for Fundulea and Caldwell over 4 yr indicated a 0.83-d reduction in duration for each degree rise in ADT. Leaf area, plant height, and tiller number were similar for cultivars exposed to 17 h, 12 h, or normal day lengths. Anthesis was 5 d earlier and the ADT during grain fill was less (20–21 °C) in plants exposed for 17 h compared to those exposed for 12 h (22 °C). Weight of 1000 kernels was significantly higher in plants with early anthesis dates, but yield was not significantly changed by the day length treatments. There appeared to be genetic differences in temperature sensitivity during reproductive development which could be exploited in selecting cultivars suitable for early anthesis. The general similarity of duration for all experiments suggests that environmental constraints imposed by latitude and selection for yield, have led to a narrow germplasm base regarding duration of grain fill.Key words: Triticum aestivum, average daily temperature during grain fill, duration of grain fill, anthesis, heading

Genetic Diversity of Winter Wheat (Triticum aestivum L.) Revealed by SSR Markers

2012 ◽  
Vol 51 (3-4) ◽  
pp. 223-229 ◽  
Author(s):  
Funda Senturk Akfirat ◽  
Ahu Altinkut Uncuoglu
Keyword(s):  
Genetic Diversity ◽  
Triticum Aestivum ◽  
Winter Wheat ◽  
Ssr Markers ◽  
Triticum Aestivum L

scholarly journals Naturally Occurring Ecdysteroids in Triticum aestivum L. and Evaluation of Fenarimol as a Potential Inhibitor of Their Biosynthesis in Plants

2021 ◽  
Vol 22 (6) ◽  
pp. 2855
Author(s):  
Anna Janeczko ◽  
Jana Oklestkova ◽  
Danuše Tarkowská ◽  
Barbara Drygaś
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Growth Conditions ◽  
Animal Kingdom ◽  
Experimental Conditions ◽  
P450 Monooxygenase ◽  
Naturally Occurring ◽  
Regulatory Effects ◽  
Potential Use

Ecdysteroids (ECs) are steroid hormones originally found in the animal kingdom where they function as insect molting hormones. Interestingly, a relatively high number of these substances can also be formed in plant cells. Moreover, ECs have certain regulatory effects on plant physiology, but their role in plants still requires further study. One of the main aims of the present study was to verify a hypothesis that fenarimol, an inhibitor of the biosynthesis of ECs in the animal kingdom, also affects the content of endogenous ECs in plants using winter wheat Triticum aestivum L. as a model plant. The levels of endogenous ECs in winter wheat, including the estimation of their changes during a course of different temperature treatments, have been determined using a sensitive analytical method based on UHPLC-MS/MS. Under our experimental conditions, four substances of EC character were detected in the tissue of interest in amounts ranging from less than 1 to over 200 pg·g−1 FW: 20-hydroxyecdysone, polypodine B, turkesterone, and isovitexirone. Among them, turkesterone was observed to be the most abundant EC and accumulated mainly in the crowns and leaves of wheat. Importantly, the level of ECs was observed to be dependent on the age of the plants, as well as on growth conditions (especially temperature). Fenarimol, an inhibitor of a cytochrome P450 monooxygenase, was shown to significantly decrease the level of naturally occurring ECs in experimental plants, which may indicate its potential use in studies related to the biosynthesis and physiological function of these substances in plants.

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