Abstract
Yellow lupin (Lupinus luteus L.) is a high-protein grain legume growing well in a range of acid soil types. However, the lack of herbicide tolerance for effective weed control has limited its adoption in broad acre farming systems. In order to breed herbicide-tolerant cultivars, a source of resistance needs to be identified. This paper reports the identification of a number of highly tolerant yellow lupin genotypes to metribuzin and carfentrazone-ethyl herbicides. Suitable dosages (LD50) of the two herbicides were identified as 150 g ai ha−1 (ai = active ingredient) for metribuzin and 200 g ai ha−1 for carfentrazone-ethyl. These dosages were used to screen diverse yellow lupin landraces and wild types to quantify the diversity of the germplasm. Considerable variation in response to the two herbicides was observed among the genotypes screened, ranging from complete plant death to no symptoms. Yellow lupin cv. Pootallong was susceptible to metribuzin, but three accessions (P20873, P23291 and P28800) were identified as tolerant with no plant damage. Four accessions (P20873, P20879, P23298 and P28832) showed higher tolerance to carfentrazone-ethyl than the standard cultivar Pootallong. A breeding line P20873 had the highest tolerance to both herbicides, indicating the possibility for developing yellow lupin cultivars with tolerance to both herbicides.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: New Zealand Journal of Crop and Horticultural Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.