Strategy of evaluation of a collection of tropical herbaceous legumes from Brazil and Venezuela I. Ecological evaluation at the point of collection

Burt, R.L.; Isbell, R. F.; Williams, W. T.

doi:10.1016/0304-3746(79)90011-8

Cited by 18 publications

(3 citation statements)

References 4 publications

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“…However, a similar approach was used in collecting tropical pasture legumes in South and Central America before introduction to Australia (Burt, Isbell & Williams 1979). In that study, the climatic zones in Australia (where herbaceous legumes are rare) were compared with those in South and Central America, and species were collected in areas with similar climate and soil characteristics.…”

Section: Conservation Of Genetic Resourcesmentioning

confidence: 99%

Ecogeography of Annual Legumes in Syria: Distribution Patterns

Ehrman¹,

Cocks²

1990

The Journal of Applied Ecology

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Section: Conservation Of Genetic Resourcesmentioning

confidence: 99%

Ecogeography of Annual Legumes in Syria: Distribution Patterns

Ehrman¹,

Cocks²

1990

The Journal of Applied Ecology

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“…It may be possible to relate environmental characteristics of the genotype's collection site to plant characteristics at a certain location (Burt et al ., 1979 ;Frankel, 1989) . It may be possible to relate environmental characteristics of the genotype's collection site to plant characteristics at a certain location (Burt et al ., 1979 ;Frankel, 1989) .…”

Section: Introductionmentioning

confidence: 99%

Durum wheat landraces from Syria

Elings

1993

Euphytica

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Syrian durum wheat landraces from diverse collection sites were evaluated for agronomic performance under arid conditions over two seasons at four locations, at two levels of nutrient availability.Grain yield differed considerably among locations. Within locations, significant population and fertilizer effects were demonstrated . In most cases, maximum yield was achieved by landraces, which demonstrates the breeding value of local germplasm . In a particular environment, the population effect was nonsignificant for total dry matter production, but significant for straw and grain yield . Nitrogen application was ineffective if moisture availability was the dominant growth limiting factor .Correlations between plant characteristics at evaluation and collection site characteristics were limited, and therefore, their utilization in germplasm evaluation appear limited . The negative relation between grain yield and soil nitrogen content at the collection site may be caused by the comparative disadvantage that germplasm from regions with favourable growing conditions has under low-yielding conditions . Particular environmental conditions at the collection site were no indicator for the response to changed growing conditions . Relatively high grain yields under good and adverse growing conditions excluded each other in all but two cases . Also, it was difficult to relate grain yield to regions of collection, as the response of individual landraces from a certain region to changing growing conditions differed strongly . Differentiation on the basis of landrace groups appears more promising . The Hauran landrace group provided the largest number of populations with relatively high grain yields over diverse environments .

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“…Williams, Reid, Burt and others (e.g. Burt et al, 1976Burt et al, , 1979Reid, 1995) sourced potential forage legumes for climate analogues of Australia, while Schultze-Kraft and Giacometti (1979) targeted potential pasture plants adapted to the acid soils of the tropics and subtropics. This consistent focus on potential use of collected germplasm remains the principle reason for the existence of the global TSTF collections.…”

Section: Biodiversity First -Well-meant Policies Create Barriers To Better Utilization and Livelihoodsmentioning

confidence: 99%

Tropical and subtropical forage germplasm conservation and science on their deathbed! 2. Genebanks, FAO and donors must take urgent steps to overcome the crisis

Pengelly¹,

Maass

2019

Outlook Agric

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Tropical and subtropical forage (TSTF) germplasm collections in the international centres of International Center for Tropical Agriculture (CIAT) and International Livestock Research Institute (ILRI), and in many national centres of developed and developing countries are under threat due to reduced financial support. Subsequent lack of skills in taxonomy, diversity assessment and adaptation would preclude them playing their crucial role in underpinning forage research for tropical and subtropical farming systems, to meet the growing global demand for livestock products together with reducing their environmental footprint. Also due to well-meant legal changes of biodiversity ownership as well as a current political culture of ‘us versus them’, germplasm collecting and sharing has become challenging. As a result, most centres have become inward-looking, have few links to other members of the global TSTF research community, including other TSTF genebanks, and are struggling to do the basics of conserving their current holdings. Undoubtedly, valuable germplasm has already been lost, and most genebanks lack the skills and knowledge to add value to research programs to develop new forages or select the best options for new environmental uses. This decline has been a relatively rapid process and reached the crisis point of today in just 20–25 years. This article proposes a four-pronged strategy based on improved efficiency, effectiveness, awareness and collaboration that should be adopted urgently. Swift and drastic action is required of international agencies, national governments, researchers and industry bodies. Much of the germplasm was collected from regions that have since undergone massive development or other changes in land use. Failure to act now will, consequently, result in further loss of genetic material forever and associated passport and descriptive information.

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Strategy of evaluation of a collection of tropical herbaceous legumes from Brazil and Venezuela I. Ecological evaluation at the point of collection

Cited by 18 publications

References 4 publications

Ecogeography of Annual Legumes in Syria: Distribution Patterns

Ecogeography of Annual Legumes in Syria: Distribution Patterns

Durum wheat landraces from Syria

Tropical and subtropical forage germplasm conservation and science on their deathbed! 2. Genebanks, FAO and donors must take urgent steps to overcome the crisis

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