ASSESSMENT OF LOSSES BY WHEAT STREAK MOSAIC VIRUS

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MASUMI M.; IZADPANAH K.A.; JOUKAR LADAN; KHERADNAM M.

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Journal: IRANIAN JOURNAL OF PLANT PATHOLOGY Year:2001 | Volume:37 | Issue:3-4 Page(s): 221-232

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Title

ASSESSMENT OF LOSSES BY WHEAT STREAK MOSAIC VIRUS

Author(s)

MASUMI M. | IZADPANAH K.A. | JOUKAR LADAN | KHERADNAM M. | Issue Writer Certificate

Keywords

WHEAT STRAK MOSAIC VIRUSQ4

WHEATQ2

FARS PROVINCEQ3

Abstract

Wheat streak mosaic virus (WSMV) caused serious losses in WHEAT in some regions of FARS PROVINCE in 2000-2001. Sampling was done to assess WSMV losses in a field in the college of Agriculture, Shiraz University. All plants in each of 10 randomly selected squaremeter plots were pulled and grouped in three categories of severely diseased, stunted and healthy, on the basis of symptoms. Their agronomical characters were measured. There was significant difference in all characters between healthy and infected plants. Difference in height and weight of tillers and number of seeds per spike in healthy and infected plants was significant at 1% level. The difference was significant at 5% level for number of tillers per plant. Yield of each plot, percent of infected plants and tillers, relative (%) weight of infected kernels, yield per plant and tillers and percentage of potential yield were calculated. There are significant difference at 1% level between yield per plant and tillers in healthy and infected plants. Percentage of potential yield is a ratio of yield of an infected plot to healthy one on the basis of one plant. For calculation of yield and percentage of potential yield and regression analysis, sampling was done in the 20 randomly selected square-meter plots. Thousand-kernel weights of two adjacent fields with 43% and 100% infection, had 18.73% and 41.04% weight reduction, respectively .Sieving of kernels showed severe reduction in kernel size due to disease. Up to 98% of healthy seeds, but only ca 13% of infected seeds germinatd.Comparative analysis of infected and healthy plant yields, yield per plant and per tiller and percentage of potential yield, showed that percentage of potential yield is a better representative of yield reduction. Among different characters and variables, percent of infected plants had a higher correlation with the percentage of potential yield. Therefore, the regression equation between percent of infected plants, and the percentage of potential yield was calculated. This equation, y= 101.164-0.755x(r=0.969)had the best fitness for the disease loss assessment. Evaluation and statistical analysis indicated that the virus had serious effect on all agronomical properties and yield components. In addition, seeds from severely infected plants were not suitable for planting.The calculated rate of loss in totally infected field was 74.38% while the field with 43.67% infection had a loss of 31.83%.

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APA: Copy

MASUMI, M., IZADPANAH, K.A., JOUKAR, LADAN, & KHERADNAM, M.. (2001). ASSESSMENT OF LOSSES BY WHEAT STREAK MOSAIC VIRUS. IRANIAN JOURNAL OF PLANT PATHOLOGY, 37(3-4), 221-232. SID. https://sid.ir/paper/48271/en

Vancouver: Copy

MASUMI M., IZADPANAH K.A., JOUKAR LADAN, KHERADNAM M.. ASSESSMENT OF LOSSES BY WHEAT STREAK MOSAIC VIRUS. IRANIAN JOURNAL OF PLANT PATHOLOGY[Internet]. 2001;37(3-4):221-232. Available from: https://sid.ir/paper/48271/en

IEEE: Copy

M. MASUMI, K.A. IZADPANAH, LADAN JOUKAR, and M. KHERADNAM, “ASSESSMENT OF LOSSES BY WHEAT STREAK MOSAIC VIRUS,” IRANIAN JOURNAL OF PLANT PATHOLOGY, vol. 37, no. 3-4, pp. 221–232, 2001, [Online]. Available: https://sid.ir/paper/48271/en

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