A Technical Manual for Parasitic Weed Research and Extension by J. Kroschel (auth.), Jürgen Kroschel (eds.)

By J. Kroschel (auth.), Jürgen Kroschel (eds.)

Parasitic weeds of the households Cuscutaceae, Orobanchaceae and Scrophulariaceae are thought of to be one of the significant difficulties dealing with agriculture within the Tropics and Subtropics. within the final a long time, huge, immense efforts were made and good fortune accomplished through scientists around the world in gaining a greater knowing in their biology and ecology in addition to of keep an eye on equipment. besides the fact that, no giant relief of infestation has been accomplished some time past and keep watch over options particular to the several parasites, plants and farming structures needs to be extra built or tailored and realised between a much wider farming inhabitants with appropriate extension equipment. This `Technical guide' presents up to date methodologies for numerous points of study and extension concerning parasitic weed species of the genera Striga, Alectra, Orobanche and Cuscuta. It has the goal to help scientists and extension staff of overseas and nationwide examine and extension institutes and universities, who're both new to the topic or plan to use additional options they aren't but time-honored with.

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Extra resources for A Technical Manual for Parasitic Weed Research and Extension

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PROCEDURE rJr The collection should be started 2-3 weeks after the parasite began to flower in the region. Prospection rJr A plant is mature when there are none or only few apical flowers left and the capsules are still intact. The collection is preferably done from fields with the same host plants as will be used later in the experiment. The plants should be transported in paper bags and then sun dried at the station. When the plants are dry, either the entire spikes (Orobanche) or only the heads with the capsules (Oro banehe, Striga) are threshed by hand in plastic bags or sacks.

5 1 in order to measure whole plants, as most parasites exhibit tiny leafs only. PROCEDURE r:Jr r:Jr r:Jr r:Jr r:Jr r:Jr r:Jr r:Jr Striga and Orobanche plants are harvested and oven-dried shortly after most plants have finished flowering. Studies on partitioning require separate assessment of root and shoot biomass of infected and non-infected host plants. A rather large set of data is required to obtain statistically significant results. Transpiration (rate) is assessed on the basis of the release of H20/m2/s (stomatal conductance).

Clones. Theoretical and Applied Genetics 87: 54-59. Francisco-Ortega J, HJ Newbury & BV FordLloyd 1993. Numerical analysis of RAPD data highlight the origin of cultivated tagasate (Chamaecytisus proliferus ssp. Palmensis) in the Canary Islands. Theoretical and Applied Genetics 87: 264-270. Joel OM, V Portnoy & N Katzir 1996. Identification of single tiny seeds of Orobanche using RAPD analysis. Plant Molecular Biology Reporter 14: 6-11. Katzir N, V Portnoy, G Tzuri, M CastejonMufioz & DM Joel 1996.

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