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Environmental effect on temporal patterns in lentil seed quality development
Seed Science Research ( IF 2.1 ) Pub Date : 2022-01-31 , DOI: 10.1017/s0960258521000313
Katherine J. Whitehouse 1 , Sally L. Norton 2
Affiliation  

To maximize seed longevity, seeds should be harvested at optimal maturity, that is, when seeds have acquired maximum physiological quality before deterioration begins. The aim of this study was to map the variation in temporal patterns of lentil (Lens culinaris Medik.) seed quality development when grown across four regeneration environments, which differ in the level of temperature and humidity control throughout the growing season, at the Australian Grains Genebank. Seeds of two lentil accessions (76080 and 76072) were harvested at different stages throughout development, commencing at 21 d after 50% anthesis until a maximum of 130 d. At each harvest, physiological quality traits, including germinability (fresh and dried seeds) and seed longevity, were determined, as well as seed dry weight and moisture content. Seeds of both accessions, and in all environments, started to accumulate physiological quality early on in development but did not reach their maximum until 3–54 d after mass maturity. The temporal patterns of desiccation tolerance and storage longevity were highly influenced by the environmental conditions during the maturation drying phase, affecting both ‘when’ maximum quality was attained and for how long it was maintained, thereafter. Seeds did not show a typical developmental response, rather variation was observed in seed quality development both between and within accessions grown in the different environments. The poorest storage longevity was seen when seeds of both accessions were grown in the cooler, temperature-controlled glasshouse, and the maximum longevity was observed in the warmer, semi-protected environments of the green and the big igloo for accessions 76080 and 76072, respectively.



中文翻译:

环境对扁豆种子品质发展时间模式的影响

为了最大限度地延长种子寿命,种子应在最佳成熟度时收获,即种子在变质开始前已获得最大生理品质时。本研究的目的是绘制小扁豆 ( Lens culinaris ) 时间模式的变化图。Medik.) 在澳大利亚谷物基因库的四个再生环境中生长时的种子质量发展,这些环境在整个生长季节的温度和湿度控制水平不同。两种扁豆种质(76080 和 76072)的种子在整个发育的不同阶段收获,从 50% 开花后 21 天开始,直到最长 130 天。在每次收获时,测定生理品质性状,包括发芽能力(新鲜和干燥种子)和种子寿命,以及种子干重和水分含量。两种种质和所有环境中的种子在发育早期就开始积累生理品质,但直到大规模成熟后 3-54 天才达到最大值。干燥耐受性和储存寿命的时间模式在成熟干燥阶段受到环境条件的高度影响,影响“何时”达到最高质量以及此后保持多长时间。种子没有表现出典型的发育反应,而是在不同环境中生长的种质之间和种质内观察到种子质量发育的变化。当两种种质的种子在较冷、温控的温室中生长时,储存寿命最差,而在较温暖、半保护的绿色和大冰屋环境中,种质 76080 和 76072 的储存寿命最长。 . 影响“何时”达到最高质量以及此后保持多长时间。种子没有表现出典型的发育反应,而是在不同环境中生长的种质之间和种质内观察到种子质量发育的变化。当两种种质的种子在较冷、温控的温室中生长时,储存寿命最差,而在较温暖、半保护的绿色和大冰屋环境中,种质 76080 和 76072 的储存寿命最长。 . 影响“何时”达到最高质量以及此后保持多长时间。种子没有表现出典型的发育反应,而是在不同环境中生长的种质之间和种质内观察到种子质量发育的变化。当两种种质的种子在较冷、温控的温室中生长时,储存寿命最差,而在较温暖、半保护的绿色和大冰屋环境中,种质 76080 和 76072 的储存寿命最长。 .

更新日期:2022-01-31
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