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Genotype by environment interactions of lucerne (Medicago sativa L.) in a cool temperate climate
Citation
Pembleton, KG and Smith, RS and Rawnsley, RP and Donaghy, DJ and Humphries, AW, Genotype by environment interactions of lucerne (Medicago sativa L.) in a cool temperate climate, Crop and Pasture Science, 61, (6) pp. 493-502. ISSN 1836-0947 (2010) [Refereed Article]
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Copyright Statement
© CSIRO 2010
DOI: doi:10.1071/CP09269
Abstract
Genotype by environmental interactions in lucerne (Medicago sativa L.) present considerable challenges when selecting an appropriate cultivar for a particular location and farming system. Data on the yield and persistence of a range of lucerne cultivars and experimental lines grown in two Tasmanian environments, Forth (41.20°S, 146.27°E, Red Ferrosol soil, under cutting with high fertiliser inputs, i.e. a high yield potential environment) and Cranbook (42.00°S, 148.03°E, Red Ferrosol soil, under grazing with low fertiliser inputs, i.e. a low yield potential environment) were examined using winter activity class as the experimental factor. At Forth, winter-dormant lucernes were the lowest yielding genotypes. In contrast, at Cranbrook, highly winter-active genotypes had lower plant persistence and dry matter yield than winter-dormant genotypes. Modified joint linear regression analysis showed that in a cool temperate climate, winter-dormant genotypes are more suited to a low yield potential environment, whereas highly winter-active genotypes are adapted to a high yield potential environment. Both the semi-winter-dormant and the winter-active genotypes were adapted to all environments. The dry matter yield of winter-dormant and highly winter-active genotypes was most sensitive to environmental conditions in winter and spring, while performance of all cultivars and experimental lines was most stable over summer.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | alfalfa, cultivar performance, genotype by environment interaction, perennial legumes |
| Research Division: | Agricultural, Veterinary and Food Sciences |
| Research Group: | Crop and pasture production |
| Research Field: | Agronomy |
| Objective Division: | Animal Production and Animal Primary Products |
| Objective Group: | Pasture, browse and fodder crops |
| Objective Field: | Lucerne |
| UTAS Author: | Pembleton, KG (Dr Keith Pembleton) |
| UTAS Author: | Rawnsley, RP (Dr Richard Rawnsley) |
| UTAS Author: | Donaghy, DJ (Associate Professor Danny Donaghy) |
| ID Code: | 58271 |
| Year Published: | 2010 |
| Web of Science® Times Cited: | 14 |
| Deposited By: | Agricultural Science |
| Deposited On: | 2009-09-23 |
| Last Modified: | 2011-04-13 |
| Downloads: | 0 |
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