Authors :
Kry Limeang; Kean Sophea; Yem Sokol; Na Sambo; Chan Sovorn; Socheath ONG
Volume/Issue :
Volume 8 - 2023, Issue 6 - June
Google Scholar :
https://tinyurl.com/253hw2k2
Scribd :
https://tinyurl.com/32wjzd5z
DOI :
https://doi.org/10.5281/zenodo.10146946
Abstract :
Tomatoes are now one of the most
commercially important vegetables in Cambodia, where
they are the fourth most important agriculture crop and
the leading tomato growers. In Cambodia, the climate
conditions are favorable for the disease due to high
temperatures, humid conditions, and acidic soil, these
factors can make the disease survive in the soil for
several years in the absence of the plant host. Southern
blight on tomato disease, caused by Sclerotium rolfsii,
was studied in Cambodia in 2010 and demonstrated that
southern stem rot caused the plant lesion on the stem
near the soil line, resulting in wilting and the plant
dying.Fifty tomato lines, including two local check
varieties, were evaluated for disease resistance, and data
on growth and yield were measured and analyzed. Apart
from this, two screenings had also been done under
greenhouse conduction during the dry and wet seasons
in order to find the resistant lines. First, the disease was
collected, identified, and cultured in the laboratory, and
then an amount of 1g of Sclerotium rolfsii was applied
directly to the soil on the tomato plant at the age of 30
days. The disease score was evaluated on days 6, 12, and
18 after inoculation. Based on the result of southern
blight screening, 4 lines showed a consistent result of
being highly disease-resistant (AVTO 1314, AVTO 1715,
AVTO 1716, and AVTO 1616). The interactions between
the genotypes and growing conditions for all yield traits
were significant.
Keywords :
Sclerotium rolfsii, resistant variety,Fifty tomato lines and Cambodia variety.
Tomatoes are now one of the most
commercially important vegetables in Cambodia, where
they are the fourth most important agriculture crop and
the leading tomato growers. In Cambodia, the climate
conditions are favorable for the disease due to high
temperatures, humid conditions, and acidic soil, these
factors can make the disease survive in the soil for
several years in the absence of the plant host. Southern
blight on tomato disease, caused by Sclerotium rolfsii,
was studied in Cambodia in 2010 and demonstrated that
southern stem rot caused the plant lesion on the stem
near the soil line, resulting in wilting and the plant
dying.Fifty tomato lines, including two local check
varieties, were evaluated for disease resistance, and data
on growth and yield were measured and analyzed. Apart
from this, two screenings had also been done under
greenhouse conduction during the dry and wet seasons
in order to find the resistant lines. First, the disease was
collected, identified, and cultured in the laboratory, and
then an amount of 1g of Sclerotium rolfsii was applied
directly to the soil on the tomato plant at the age of 30
days. The disease score was evaluated on days 6, 12, and
18 after inoculation. Based on the result of southern
blight screening, 4 lines showed a consistent result of
being highly disease-resistant (AVTO 1314, AVTO 1715,
AVTO 1716, and AVTO 1616). The interactions between
the genotypes and growing conditions for all yield traits
were significant.
Keywords :
Sclerotium rolfsii, resistant variety,Fifty tomato lines and Cambodia variety.
