Richards Mark F, Preston Aaron L, Napier Tony, Jenkins Leigh, Maphosa Lancelot
NSW Department of Primary Industries, 322 Pine Gully Road, Wagga Wagga, NSW 2650, Australia.
NSW Department of Primary Industries, 2198 Irrigation Way, Yanco, NSW 2705, Australia.
Plants (Basel). 2020 Sep 24;9(10):1257. doi: 10.3390/plants9101257.
Chickpea is the main legume rotation crop within farming systems in northern New South Wales (NSW), Australia, and is grown mainly under rainfed conditions. Recent expansion of chickpea growing areas in southern and central western NSW expose them to abiotic stresses; however, knowledge about how these stresses affect overall crop development is limited. This study aimed to examine the influence of sowing time on the timing and duration of key chickpea phenological growth phases in southern and central western environments of NSW. Experiments were conducted over two years in southern NSW (Leeton, Wagga Wagga and Yanco (one year)) and central western NSW (Trangie) to identify phenology responses. Climatic, phenology and experimental site data was recorded, and the duration of growth phases and growing degree days calculated. Early sowing (mid-April) generally delayed flowering, extending the crop's vegetative period, and the progressive delay in sowing resulted in shorter vegetative and podding growth phases. All genotypes showed photoperiod sensitivity, and the mean daily temperature at sowing influenced time to emergence and to some extent crop establishment. This study concludes that environmental factors such as temperature, moisture availability and day length are the main drivers of phenological development in chickpea.
鹰嘴豆是澳大利亚新南威尔士州北部农业系统中的主要豆类轮作作物，主要在雨养条件下种植。新南威尔士州南部和中西部地区鹰嘴豆种植面积最近的扩大使它们面临非生物胁迫；然而，关于这些胁迫如何影响作物整体发育的知识有限。本研究旨在考察播种时间对新南威尔士州南部和中西部环境中鹰嘴豆关键物候生长阶段的时间和持续时间的影响。在新南威尔士州南部（利顿、沃加沃加和扬科（一年））和中西部（特兰吉）进行了为期两年的试验，以确定物候反应。记录了气候、物候和试验地点数据，并计算了生长阶段的持续时间和生长度日。早播（4月中旬）通常会延迟开花，延长作物的营养期，而播种时间的逐渐推迟导致营养期和结荚期缩短。所有基因型均表现出光周期敏感性，播种时的平均日温度影响出苗时间，并在一定程度上影响作物的定植。本研究得出结论，温度、水分供应和日照长度等环境因素是鹰嘴豆物候发育的主要驱动因素。
