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Influence of Fertilizer Microdosing on Strigolactone Production and Striga hermonthica Parasitism in Pearl Millet

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http://www.fspublishers.org/search_list2.php?title=Influence+of+Fertilizer+Microdosing+on+Strigolactone+Production+and+Striga+hermonthica+Parasitism+in+Pearl+Millet
 
Title Influence of Fertilizer Microdosing on Strigolactone Production and Striga hermonthica Parasitism in Pearl Millet
 
Creator Jamil, M
Charnikhova, T
Jamil, T
Ali, Z
Mohamed, N E M A
Van Mourik, T
Bouwmeester, H J
 
Subject Pearl Millet
Fertilizers
Plant Pathology
Plant Disease
 
Description Africa and nutrient deficiency aggravates this problem, often leading to complete failure of pearl millet crops. Like many other
species, pearl millet secretes germination stimulants (strigolactones) into the soil in response to mineral nutrient deficiency,
which triggers Striga seed germination resulting in infection. A greenhouse experiment was conducted to evaluate the
influence of different doses of di-ammonium phosphate (DAP) fertilizer on strigolactone production and Striga infection in
three different African pearl millet cultivars (KBH, Sadore Local and Striga resistance). All the pearl millet genotypes
produced varying amounts of different strigolactones like orobanchol, epi-orobanchol, orobanchyl acetate and 5-deoxystrigol,
the level of which decreases with increasing doses of DAP. The control treatment (no DAP) showed maximum Striga
germination, emergence and dry biomass production in all cultivars of pearl millet. Supply of DAP fertilizer up to 4 g per hill
suppressed Striga germination by 69, 64 and 59%; emergence by 87, 85 and 95% and dry biomass by 91, 98 and 83% in cvs
KBH, Sadore Local and Striga Resistance, respectively. The present findings reveal that DAP fertilizer minimizes
strigolactones production and, as a result, reduces Striga infection in pearl millet. Low doses of DAP fertilizer is a promising
strategy to lower the destructive effect of Striga on pearl millet. The use of small doses of DAP fertilizer combined with
resistant crop cultivars, intercropping with legumes and hand pulling of Striga at flowering in an integrated Striga control
strategy should be developed to help African farmers control this noxious weed.
 
Publisher Friends Science Publishers
 
Date 2014
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/10558/1/Influence%20of%20Fertilizer%20Microdosing.pdf
Jamil, M and Charnikhova, T and Jamil, T and Ali, Z and Mohamed, N E M A and Van Mourik, T and Bouwmeester, H J (2014) Influence of Fertilizer Microdosing on Strigolactone Production and Striga hermonthica Parasitism in Pearl Millet. International Journal of Agriculture and Biology, 16 (5). pp. 935-940. ISSN 1560–8530