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首页> 外文期刊>South African Journal of Plant and Soil >Predicting seedling emergence of cabbage and onion using vigour tests.
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Predicting seedling emergence of cabbage and onion using vigour tests.

机译：使用活力测试预测卷心菜和洋葱的幼苗出苗。

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摘要

Predicting seedling emergence using standard and non-standard germination temperatures, standard accelerated ageing (AA) and saturated salt accelerated ageing (SSAA) tests, were investigated. Germinations were performed at temperatures of 10 degrees , 20 degrees , 20 degrees /30 degrees and 30 degrees C for cabbage (Brassica oleracea var. capitata L.) and 10 degrees , 15 degrees , 20 degrees and 30 degrees C for onion (Allium cepa L). Seeds were aged using relative humidities of 32% (RH32), 43% (RH43), 75% (RH75) and 100% (RH100). Emergence trials were conducted at a range of temperatures (winter, 15 degrees /25 degrees and 30 degrees C) and growth media. Most SSAA vigour tests were useful in differentiating seed lots based on their physiological stage of deterioration. In the SSAA tests, the seed moisture content remained below 14% and no fungal growth occurred. For cabbage, highly significant correlations were obtained between 10 degrees C and RH32 and all emergence trials. For onions highly significant correlations with emergence percentage were obtained with germinations at 15 degrees and 30 degrees C. Mean germination time (MGT) and germination energy (GE) were valuable in categorising seed lots with moderate vigour levels, however, only GE revealed good correlation with winter emergence trial of onions.
机译：使用标准和非标准发芽温度，标准加速老化（AA）和饱和盐加速老化（SSAA）测试来预测幼苗出苗。甘蓝（Brassica oleracea var。capitata L.）在10度，20度，20度/ 30度和30度的温度下发芽，而洋葱（葱属）在10度，15度，20度和30度的温度下发芽L）。使用32％（RH32），43％（RH43），75％（RH75）和100％（RH100）的相对湿度老化种子。在一定温度范围（冬季，15度/ 25度和30摄氏度）和生长培养基上进行了萌芽试验。大多数SSAA活力测试可根据其生理恶化阶段来区分种子批次。在SSAA测试中，种子含水量保持在14％以下，并且没有真菌生长。对于白菜，在10摄氏度和RH32之间以及所有出苗试验之间都获得了高度显着的相关性。对于洋葱，在15°C和30°C的发芽率下与发芽率具有极显着的相关性。平均发芽时间（MGT）和发芽能（GE）在中等活力水平的种子批次分类中很有价值，但是，只有GE表现出良好的相关性随着冬季洋葱的出苗试验。

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