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Radish Turnip mosaic virus resistance on the identification of: - resistances index

Concentration of inoculum (1 / 3). Vaccinated 2 times (the first 3 days were followed after 1-like 1), 2O days after inoculation, at the onset of the peak incidence and disease index survey. Grading criteria virus-sik, according to Wang Lung C13 method. Autumn 1986, Autumn 1987, will be broadcast at 8 years old material in the vegetable plots. Randomized block,[link widoczny dla zalogowanych], 3 replications. Aphids during the growing dead are the same as field management. 4 were planted in the room. 2. Resistances index formula in the identification of pros and cons of resistant varieties, the incidence rate of y depends on the amount of virus resistant varieties and environmental factors R mouth, that is: Y = r】 = 7R, mouth). According to the theory of Armitage, healthy plants and viral load rate P t, and the invasion of the virus in plants and effective relationship between the mitochondria as the number of P, l ... P = (1 a): Ie (1) is of Jiangsu Academy of Agricultural Sciences Vegetables the work. 26El Received January 1989. Wang Aimin, etc.: Radish Turnip mosaic virus resistance of identification. 1,1.1 period - resistances index ... assigned to the variable environmental conditions Q, then P = (1 a) in a purified within inbred lines. The virus concentration. P = Pu _y) = ef. (3) due to a viral invasion of the host mitochondrial incidence of very small, so p itself is not the incidence, and phase out on behalf of its size. So. Resistance can be used to measure the size of p,. . Considering Y as the disease index, by (3) may (4). ± 0P = (Bu 1) = P varieties, Ln (1 / 1 of a Y1) 2r1tq. (6) tLn (1 / 1 a Y,[link widoczny dla zalogowanych],) =: tq mouth, 2 /, l4ln (1/l-2) / 41 power (1/l-1 ) (7) 9, where: y = Σib/9.Σ6; i for the disease progression; bi as the incidence of both number of trees. t-D, O, if y is the control of a susceptible, y as disease resistance varieties tested, the n for the tested varieties resistances index .3 theory for the conditions Armitage test of the formula (3) after natural logarithm on both sides of the common logarithm was taken,[link widoczny dla zalogowanych], Logln (1 / 1 a) logti + log (p 'mouth) ( Cool

photos dill b species Q Logln (1 a) and TuMV level linear relationship between dilution due p.q is a constant, then the logln (1 / logt of BU and the smell was a linear relationship. TuMV inoculation of different varieties of carrot h after dilution level of incidence and the relationship between level of dilution, see photo. Since logt and log1n (1 / 1 a) showed a linear relationship. the formula (1) The condition meet the .4. resistances index formula for the application and verify the application of (7) to train as early as the control. according to identification results, obtained various resistances index (tarsal table). Table shows that as long as the susceptible control varieties of disease index of not less than 10 years to ask the variety in different, different virus concentrations,[link widoczny dla zalogowanych], the resistances index more stable. * 122 * l3 Nanjing Agricultural University Study Continued Note: carbuncle refers to the unit is%, test species There are four unidentified. (Jiangsu Academy of Agricultural Sciences, Institute of Vegetable Research Fellow Helin spine, the school cut off the feet of Plant Protection,[link widoczny dla zalogowanych], Professor Qin Pu ancestors to give guidance to teachers in this group in South Korea claim to provide TuMV drug sources, I would like to thank Chen.) ●
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