Co-operative hybrid maize tests in European and Mediterranean countries, 1950

a progress report
  • 43 Pages
  • 3.20 MB
  • 7454 Downloads
  • English
by , Rome
Statement[comp. by R.W. Jugenheimer and others]
SeriesFAO development paper, no. 31
ContributionsJugenheimer, R.W.,
The Physical Object
Paginationiii, 43 p. fold. map, tables (part. fold)
ID Numbers
Open LibraryOL15082255M

Cover title: Co-operative hybrid maize tests in European and Mediterranean countries - Description: iii, 43 pages, [3] folded leaves of plates: map ; 23 cm. Series Title: FAO agricultural development paper, no.

; FAO development paper., Agriculture ;, no. Other Titles. Cover title: Co-operative hybrid maize tests in European and Mediterranean countries - Description: v, pages ; 23 cm. Series Title: FAO agricultural development paper, no. Other Titles: Co-operative hybrid maize tests in European and Mediterranean countries - Responsibility: compiled by R.W.

Jugenheimer and R.A. Silow. Organisation for European Economic Co-operation. Hybrid maize (corn) in European countries. Paris, (OCoLC) Document Type: Book: All Authors / Contributors: Merle Truman Jenkins; Organisation for European Economic Co-operation.

Genetic structure of European and Mediterranean maize borer populations on several wild and cultivated host plants Laurianne Leniaud Laboratoire Dynamique de la Biodiversité, UMR CNRSUniversité P.

Sabatier – Toulouse III, route de Narbonne, 31 Toulouse, France,Cited by: Maize carrying Texas cytoplasm for male sterility (cms-T) was widely used for hybrid seed production in the s and s. A new race (race T) of the southern corn leaf blight pathogen Cochliobolus heterostrophus emerged in that was very pathogenic on cms-T maize, causing disease epidemics in and (Ullstrup, ).

After World War 2, European traditional varieties were used to develop hybrid varieties adapted to northern European conditions.

Hence, inbred lines derived from the French southwestern Lacaune population by André Cauderon and co-workers, namely F2 and F7 (for France n°2 and 7, respectively), were crossed 1950 book inbred lines developed by USA research.

Drought occurs at high frequency in maize production zones in Africa.

Details Co-operative hybrid maize tests in European and Mediterranean countries, 1950 FB2

Carefully controlled moisture deficits have been imposed at anthesis and grain filling stages of maize to develop drought tolerant germplasm. The present study was conducted to examine the potential effects of drought tolerant parents selected under such managed drought stress on agronomic performance of their top-cross.

World trend is to more maize hectarage grown to fewer, more widely-adapted hbrids. My purpose is to document research events leading to the most popular corn hybrids, Pioneer Brand and I provide background on maize adaptedness, on the seed maize business, on commercial maize hybrid development process, and on cultural practice change.

I provide historical information on the. The resolution that can be obtained from molecular genetic markers affords new prospects for understanding the dispersion of agricultural species from their primary origin centres.

In order to study the introduction and the dispersion of maize in Europe, we have characterised a large and representative set of maize populations of both American and European origins for their variation at A cyclical learning model combining the on-farm testing and participatory ex-ante analysis was used during four years ().

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as Kenya which are maize deficit countries. Maize is a major. Results of co-operative hybrid maize tests in Europe, Washington, (OCoLC) Document Type: Book: All Authors / Contributors: Food and Agriculture Organization of the United Nations.

Agriculture Division. OCLC Number: Description: 33 pages map 28 cm. Series Title: FAO development paper., Agriculture ;, no. Other Titles: Co-operative hybrid maize tests in. Organisation for European Economic Co-operation. Hybrid maize (corn) progress in OEEC countries. Paris, (OCoLC) Document Type: Book: All Authors / Contributors: Organisation for European Economic Co-operation.

OCLC Number: Description: 48 pages 24 cm. Series Title: Organisation for European Economic Co-operation.; OEEC. Maize (Zea mays L.) is adapted to all agro-ecologies in west Africa.

Varieties of different maturity groups are needed to maximally exploit the agro-ecologies for maize production. Evaluation of maize hybrids for grain yield stability in north-west of Pakistan. Sarhad J. Agric.

27(2): INTRODUCTION Maize (Zea mays L.) is the third most important cereal crop in Pakistan after wheat and rice and is produced in most countries of the world. Maize accounts for % of the total cropped area and % of the. When commercial hybrid maize was first introduced, few people realized its potential to increase the world’s agricultural productivity.

Hybrid maize breeding originated inprimarily through the innovative research of Dr. G.H. Shull, a scientist at the Carnegie Institute in Washington, D.C. A few years later, a young central. become the major type of maize grown in many countries, including the United States where 85% of the crop is GM.

European and African countries originally banned GM maize, but while still very controversial, this position may be changing as the benefits of Bt corn become accepted. In fact, as ofherbicide-resistant GM maize was grown in. It is grown in more countries than any other cereal.

In the middle of 19th and beginning of 20th centuries respectively, U.S. farmers and seeds men develop outstanding open-pollinated varieties, and intensive research in plant breeding offers spectacular improvement in crop yields. Hybrid maize is the greatest practical achievement of.

Report: best practice for cultivation and coexistence of GM maize Specific measures relating to storing and the application of isolation distances can help limit or avoid the co-mingling of genetically modified (GM) maize with conventional and organic maize, a report prepared by the European Coexistence Bureau (ECoB) concludes.

do open-pollinated maize varieties perform better than hybrids in agroforestry systems. - alain ndoli, frÉdÉric baudron, tesfaye shiferaw sida, antonius g.

schut, j. van heerwaarden, ken e. giller. The driest and wettest summers on record, in terms of the amplitude of the index averaged over Europe, were andrespectively, while the years and saw over 11% and over 7% of. We have proposed breeding a maize (Zea mays L.) ideotype that will maximally utilize an optimum production environment.

This environment should include: a) adequate moisture; b) favorable temperatures throughout the growing season; c) adequate fertility; d) high plant densities; e) narrow row spacings; and f) early planting dates.

The maize ideotype that should produce optimally when grown. 2. Maize-based farming systems in eastern and southern Africa Maize cropping systems. Maize production occupies between 40% ( Mha,Tanzania) and 90% ( Mha, Malawi) of cultivated lands across countries in ESA.

Maize crops are intercropped, predominantly with legumes, but also with vegetable crops, generally in fields closer to farm. Among the bigger cereal producing countries, production was considerably higher in Romania (+ %) and Spain (+ %).

Lower harvests for most cereals, with the exception of grain maize The EU harvested million tonnes of common wheat and spelt inrepresenting % of all cereal grains harvested (see Figure 2). This was   Maize is the major food crop of East Timor. It is grown under subsistence farming and its yields are low (– t ha −1), with production insufficient to meet national “Seeds of Life” project, operating sincehas introduced open-pollinated maize varieties from other countries via the International Maize and Wheat Improvement Center (CIMMYT) and evaluated them for.

Improved seasonal climate prediction for maize yield forecasts in Europe Crops that are generally dependent on weather conditions are heavily impacted by climate variability and extremes.

One of the problems in forecasting crop yields is the lack of reliable long-term forecasts of extreme events, such as the heatwave in Europe. These diseases are of serious concern to maize producers in several countries of Asia, Africa, and throughout the Americas.

Symptom expression is greatly affected by plant age, pathogen species, and environment. Usually, there is chlorotic striping or partial symptoms in leaves and leaf sheaths, along.

Description Co-operative hybrid maize tests in European and Mediterranean countries, 1950 EPUB

The history of maize breeding methods in the USA is reviewed to examine the question of types of maize cultivars in sustainable agriculture.

The yield potential of OP cultivars was much higher than national average yields prior tobut hybrid cultivars today often out-yield OP cultivars by 50–% or more. However, rates of gain for yield using recurrent selection on populations appear. Hybrid D 75 by 30 90 79 5 18 Hybrid D 38 by 38 90 79 10 5 20 Economic analysis Economic analysis of maize from different treatments was determined using gross margin and cost-benefit analyses.

Cost and benefit estimates were based on revenues and costs incurred in production of maize using the different treatments. Genetically modified (GM) herbicide‐resistant maize (e.g., Bt corn, a variant of maize that has been genetically altered to express one or more proteins from the bacteria, Bacillus thuringeiensis) has become the major type of maize grown in many countries, including the United States where 85% of the crop is GM.

European and African countries. Before (from records going back to ) more than 1 million acres of corn were harvested each year. Increasing demand and attractive crop prices for cotton, rice and soybeans resulted in the decline of corn production in the state to less thanacres (Figure Intro-1).

The increasing nem­. When nitrogen fertilizer was combined with hybrid corn varieties, first experimented with by Henry A.

Wallace inyields went up rapidly. The agricultural revolution of the s, s, and s transformed the practice of agriculture, reduced the number of people on farms, and significantly increased the productivity of those who remained.Hybrid maize breeding results in a narrowing of the genetic base because new lines are mostly derived from a limited set of elite inbred lines (Duvick et al.

; Troyer ). For maize.Early history Pre-Columbian America. Tobacco was first discovered by the native people of Mesoamerica and South America and later introduced to Europe and the rest of the world.

Tobacco had already long been used in the Americas by the time European settlers arrived and took the practice to Europe, where it became popular.

Eastern North American tribes have historically carried tobacco in.