Theme 12: Forage Breeding and Genetics
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Publication Date
2001
Location
Brazil
Description
The main aim of the study was to analyse chlorophyll a + b content (SPAD values) determined by portable chlorophyllmeter (SPAD- 502, Minolta, Japan) and crude protein content in leaves of timothy, coocksfoot, perennial ryegrass and meadow fescue (total 24 cultivars). Differences between both parameters were confirmed and a close relationship between chlorophyll content (SPAD values) and crude protein concentration was found. Correlation coefficient between SPAD and crude protein varied from 0.541++ for ryegrass to 0.906++ for timothy. This fact should be used for selection of grasses with higher crude protein content and/or better use of mineral soil nitrogen.
Citation
Gáborèík, N., "Chlorophyll Concentration (Spad Values) as an Indicator of Crude Protein Content and as a Selection Criterion in Grass Breeding" (2001). IGC Proceedings (1985-2023). 8.
(URL: https://uknowledge.uky.edu/igc/19/12/8)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Chlorophyll Concentration (Spad Values) as an Indicator of Crude Protein Content and as a Selection Criterion in Grass Breeding
Brazil
The main aim of the study was to analyse chlorophyll a + b content (SPAD values) determined by portable chlorophyllmeter (SPAD- 502, Minolta, Japan) and crude protein content in leaves of timothy, coocksfoot, perennial ryegrass and meadow fescue (total 24 cultivars). Differences between both parameters were confirmed and a close relationship between chlorophyll content (SPAD values) and crude protein concentration was found. Correlation coefficient between SPAD and crude protein varied from 0.541++ for ryegrass to 0.906++ for timothy. This fact should be used for selection of grasses with higher crude protein content and/or better use of mineral soil nitrogen.
