Just another CropScience weblog

Archive for the 'Plant biodiversity' Category

Effects of Intercropping Systems on Environment

Poster-Presentation in “Biodiversity and Ecosystems Goods and Services”, Dürr N. and Weber V. Intercropping cultivating two or more crops in the same space at the same time form of polyculture using companion planting principles Services provided by intercropping Genetic diversity physical barrier to fungal spread ↑complexity & competition of pathogens Induced resistance > rice blast [...]

December 3rd, 2008
Topic: Crop Science, Plant biodiversity Tags: None

Stable Isotpes. Example of Deuterium (H) and Carbon (C). Competition among plant species in diverse communities

Carbon Discrimination against 13C during photosynthesis is a well characterized phenomenon. Plant matter produced during photosynthesis is depleted in 13C (lower 13C/12C ratio), compared to atmospheric CO2. The magnitude of this depletion mainly depends on the photosynthetic pathway of CO2 fixation. Plants endowed with C3 pathway have a lower 13C/12C ratio than plants exhibiting C4 [...]

January 31st, 2008
Topic: Crop Science, Plant biodiversity Tags: None

Strategies for Soil Recovery of Degraded Lands under Arid Climate

Draft. In: Biogeochemistry and sustainable management. WeberV 2007 1. Abstract Human activities have often led to degradation of the world’s land resources. The global assessment of human-induced soil degradation (GLASOD) has shown that degradation results mainly from erosion and salinization, which are discussed in this review. Land conservation and rehabilitation of deserted or saline land are [...]

December 4th, 2007
Topic: Crop Science, Plant biodiversity Tags: None

Genetic diversity within and between ramnant populations of the endangered calcareous plant Globularia bisnagarica L.

The Paper of Honney et al. was presented from WeberV at the “Current Topics in Grassland Science”, (29.10.07) Honney et al. (2007) found out, that the Globularia bisnagarica populations in Belgium (27) are characterized by high genetic differentiation (Gf=0,53, p<0,001). A Manteltest revealed a significant isolation by distance. Gene diversity within the populations was low (Hj=0,081) and [...]

October 30th, 2007
Topic: Crop Science, Plant biodiversity Tags: None