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Important ecological traits for selecting Biserrula pelecinus L. (biserrula) genotypes for their potential introduction into agricultural systems

Loi, Angelo and Franca, Antonello and Nutt, Bradley J. and Yates, Ron J. and D'Antuono, Mario F. and Howieson, John G. (2014) Important ecological traits for selecting Biserrula pelecinus L. (biserrula) genotypes for their potential introduction into agricultural systems. Grass and forage science , in press. ISSN 0142-5242. eISSN 1365-2494. Article.

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DOI: 10.1111/gfs.12139

Abstract

An investigation of eleven genotypes and two cultivars of Biserrula pelecinus L. (biserrula) was conducted in Western Australia to study their ecological and agronomic traits. All biserrula genotypes were productive in the 2 years of testing, with dry-matter production ranging from 3·5 to 4·9 t ha−1 and seed yield ranging from 314 to 1381 kg ha−1. Biserrula has high initial levels of hard seededness (95–100%) and a more gradual hard seed breakdown (68–92%) in summer. The high levels of hard seed decreased the seedling densities of biserrula in the second year, while were at highest levels in the third year after the plots were cropped to wheat. A further experiment was conducted to study the interaction between spray-topping and seed set. This study showed subterranean clover seed yields were more tolerant to herbicides than a number of biserrula genotypes. There were significant responses to the herbicides within the biserrula genotypes, and 95GCN59 was less affected. The rhizobium experiment showed a strong host strain/interaction and has emphasized the importance of simultaneous breeding and selection of plant germplasm run in parallel with the selection of elite strains of rhizobia such as WSM1497 to optimize nitrogen fixation.

Item Type:Article
ID Code:10321
Status:In Press
Refereed:Yes
Uncontrolled Keywords:Pasture legumes, hard seededness, rhizobium
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/19 Zootecnica speciale
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto per il sistema produzione animale in ambiente Mediterraneo, Sassari
Publisher:Blackwell / Wiley
ISSN:0142-5242
eISSN:1365-2494
Deposited On:17 Nov 2014 11:40

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