الفهرس 
REVIEW OF LITERATUREOnly 14 pages are availabe for public view
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Abstract
More than 15 fungi, including field and storage fungi were
determined as sunflower seed-borne mycoflora.
Some variations were observed between seed health data obtained from different regions. Storage
fungi were superior to field fungi in warm weather seeds.
Chlorine soaking resulted in eliminating some fungal inocula
which recorded in low frequencies such as roseum and Verticillium sp. Other fungi were only
reduced to different levels.
Blotter Method with 12/12 hr visible florescent light/darkness was more effective in detecting
seed-borne fungi followed by Deep Freezing Method with 12/12 hr visible florescent light/darkness.
Deep Freezing Method with complete darkness was the least effective , but the best in detecting A.
niger and£.semitectum.
Pioneer 6480 seemed to be highly susceptible to charcoal and sclerotinia rot diseases followed by
Hysun 24 and Hysun 33. In contrast , it was the best resistant one against head rot diseases .
Pioneer 6480 gave the highest yield when planted as early as June 1’1 (62.45 g I 1000 seeds) and
decreased descendingly by delaying sowing dates. charcoal rot disease was the only one recorded
high incidence when sunflower planted early. Late sowing dates seemed to increase incidences of
sclerotinia , head rots and leaf spot diseases.
Chemical seed gave unclear effects onthe final yield obtained when estimated as weight of 1000
seeds.The same trend was noticed in case of oil percentage .
Treating seeds with bioagents increased germination percentages comparing to the control treatment.
They also enhanced 1000 seed weight especially in newly reclaimed areas under drip irrigation
system.
Seed-borne fungi : The storage condition combination (40% RH - 10°C) was relatively the best in
conserving seed conditions as long as 90 days followed by store combination of 40% RH - 30°C, while
90% RH - 10°C developed certain fungal growth such as Penicillium spp. The last regime (90% RH -
30°C} was the worst.
Very limited changes had been recorded in seed oil content in
four designated stores for as long as 150 day.
High relative humidity (and subsequently, high moisture content) led to a considerable increase in
free fatty acid content. Worse results obtained when store was worm and humid for a long period of
time.
Starting storage period with as low as possible fungal contamination delayed toxin production.
Seeds collected from worm regions then stored in 90% RH - 30°C were highly contaminated with
aflatoxins .
Seeds inoculated with major storage fungi then stored at
humid warm environment resulted in considerable changes of oil properties . Moreover, fatty acid
composition greatly varied from the control (not inoculated) treatment.