Download or read book Assessment of Resistance and Inheritance to Barley Yellow Dwarf Virus Disease in Five Wheat Cultivars Triticum aestivum L written by Tola Jaime and published by INIAP Archivo Historico. This book was released on with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of Resistance and Inheritance to Barley Yellow Dwarf Virus Disease BYDV in Five Wheat Cultivars Triticum Aestivum L written by Jaime Tola and published by INIAP Archivo Historico. This book was released on 1983 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Barley Yellow Dwarf Virus (BYDV) is a major disease of wheat. Unfortunately, unlike barley where the Yd2 gene provides adequate levels of resistance, the situation in wheat is more complex. This study was designed to provide information regarding: 1) evaluation of methods of measuring resistance among selected cultivars; 2) identification of sources of resistance; and 3) determination of the nature of inheritance controlling BYDV resistance. Five wheat cultivars with possible different levels of resistance to BYDV and the resulting F1, F2, F3, BC-1 and BC-2 populations provided the experimental material. An assessment of the damage inflicted by aphids feeding per se and aphid plus virus on the five cultivars was determined under greenhouse conditions. Cultivars and the resulting progeny were grown in the field to confirm the greenhouse findings and to determine nature of inheritance. Aphid feeding per se did not influence most cultivars other than for plant height involving Yamhill and Anza. Despite the lack of visual symptoms, BYDV did significantly influence the six parameters measured with the cultivars Stephens and Riebesel exhibiting the greatest reduction. No immunity was observed for any of the cultivars tested. Under field conditions Stephens, followed by Riebesel, were the most susceptible cultivars with Yamhill, Novi Sad and Anza being the most resistant based on the parameters measured. The inheritance pattern appeared to be quantitative with both additive and nonadditive genetic variability involved in controlling resistance. This was verified by the transgressive segregation noted in F2 and F3 generations and the significant General and Specific Combining Ability estimates for the BYDV score. Due to the quantitative nature of BYDV resistance and the different genetic factors observed for the cultivars in this study, a recurrent selection program should result in higher levels of resistance than exhibited by the cultivars employed in this study. Also, the use of a visual BYDV score appears to be an effective means of identifying resistant parents.

Download or read book Inheritance of Resistance to Barley Yellow Dwarf Virus in Wheat on Basis of Visual Symptom Expression and PAV RNA Concentration written by Gale Francis Lorens and published by . This book was released on 1988 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Inheritance of Resistance to the Barley Yellow Dwarf Virus in Wheat Triticum Aestivum L written by Mehmet Ali Topcu and published by . This book was released on 1975 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quick Bibliography Series written by and published by . This book was released on 1976 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ti plasmids and Other Plant Gene Vectors written by Robert D. Warmbrodt and published by . This book was released on 1991 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1972 with total page 1302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quick Bibliography Series written by National Agricultural Library (U.S.). Reference Division and published by . This book was released on 1991 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gene Expression in Crop Plants written by Robert D. Warmbrodt and published by . This book was released on 1991 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Effectiveness of the Visual Symptom Score in Selecting Germplasm for Resistance to the Barley Yellow Dwarf Virus Disease in Wheat Triticum Aestivum L written by Oswaldo Chicaiza and published by INIAP Archivo Historico. This book was released on 1989 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agronomy News written by and published by . This book was released on 1989 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.

Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Biological Agricultural Index written by and published by . This book was released on 1990 with total page 2408 pages. Available in PDF, EPUB and Kindle. Book excerpt: