The patterns and extent of hard seed breakdown of dormant seeds and pods following burial in the soil in February (summer) varied for up to 19 accessions of 12 species of annual forage legumes. The experiments, at six sites across southern Australia, were designed to identify legumes whose patterns of hard seed breakdown would suit them to agronomic evaluation in a summer sowing research program. For a subset of accessions, sufficient hard seed breakdown was demonstrated between February and April to allow a high proportion of seed to germinate in late autumn—a desirable pattern for summer sowing. Although there was a large G x E interaction, some cultivars of Ornithopus sativus Brot., O. compressus L. and Trifolium spumosum L. had a pattern that was reproducible at all sites. The experiments also identified accessions of Biserrula pelecinus L. and T. glanduliferum Boiss., which had the desirable pattern in regions of south‐eastern Australia, but not Western Australia. A pragmatic approach for selection of forage legume accessions in situ for evaluation within a summer sowing program was demonstrated.

中文翻译：

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澳大利亚南部夏季未经处理的饲草豆类种子播种到干燥土壤中的硬种子分解模式

2月份（夏季）被埋在土壤中后，休眠种子和豆荚的硬种子分解的模式和程度有所不同，其中包括12种年度饲用豆科植物的多达19种。该实验在澳大利亚南部的六个地点进行，旨在鉴定豆类，这些豆类的坚硬种子分解模式适合夏季播种研究计划中的农艺学评估。对于一部分种质来说，在2月至4月之间已经证明了足够的硬种子分解，可以使很大一部分种子在深秋发芽，这是夏季播种的理想方式。尽管存在较大的G x E相互作用，但一些虎眼万年青的品种。，O. compressus L.和Trifolium spumosumL.的模式在所有站点上都是可重现的。实验还确定了Biserrula pelecinus L.和T. glanduliferum Boiss。的种质，它们在澳大利亚东南部而不是澳大利亚西部具有理想的模式。演示了一种实用的方法，用于在夏季播种计划中就地选择草料豆科植物进行评估。