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Study of seed morphology and influence of ageing and storage conditions on germination and seedling vigour of non-Basmati aromatic rice
Journal of Stored Products Research ( IF 2.7 ) Pub Date : 2021-08-10 , DOI: 10.1016/j.jspr.2021.101863
Mrityunjay Ghosh 1 , Jaladhar Gorain 1 , Ashis Kumar Pal 1 , Bhaswati Saha 1 , Prabir Chakraborti 2 , B. Avinash 1 , Divya M. Pyngrope 1 , Sibajee Banerjee 1 , Shrabana Sarkar 1
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The seed quality of diverse aromatic rice landraces is of great importance in tropical and sub-tropical humid environment. The changes in seed behaviour under different storage methods and durations need to be studied to conserve the seeds in better way for sowing viable and healthy seeds toward greater rice production with premium quality. Three experiments were conducted (1) to find out distinguishable seed morphological traits and (2) to understand the effects of storage duration, container and environment on germination and seedling vigour of non-Basmati aromatic rice during 6-month period (December to June) before next growing season. Among 16 aromatic rice cultivars, genetic variations in seed length (4.8–7.5 mm), seed width (2.1–3.2 mm), test weight (10.0–15.6 g), lemma and palea colour (golden-yellow, straw-yellow, black, brownish-red, purple spot at tip on straw background) were noted. Germination rate was steadily increased up to 4 months of post-harvest storage (93.0%, CV 4.9%) and attained a plateau for next 2 months. Four landraces viz. Gandheswari, Kalonunia, Kaminibhog and Radhunipagal remained dormant up to 2 months; while Mohanbhog, Gandhamalati, Gopalbhog and Badshabhog had better germinability throughout normal storage period. Among four containers, jute-made gunny bag and earthen pot were found suitable for higher germination rate (82.7–85.0%) as well as to produce better seedlings of Radhunipagal rice stored for 6 months compared to non-biodegradable material made containers (galvanized iron bin and polypropylene bag). Besides, the use of neem leaf could favour germination speed (39.5 vs 36.1%) and seedling vigour of Radhunipagal rice than no neem leaf treatment. Storage at low temperature (8±2 °C) for 6 months appeared better for greater seedling length (20.8 vs 19.3 cm) and vigour index (1897 vs 1733) of Lal Badshabhog rice compared to ambient condition (28±4 °C).



中文翻译:

种子形态及陈化及贮藏条件对非香米发芽及幼苗活力的影响研究

不同芳香稻地方品种的种子质量在热带和亚热带潮湿环境中具有重要意义。需要研究不同储存方法和持续时间下种子行为的变化,以更好地保存种子,以播种有活力和健康的种子,以实现更高质量的水稻产量。进行了三个实验 (1) 找出可区分的种子形态特征和 (2) 了解储存时间、容器和环境对非印度香米在 6 个月期间(12 月至 6 月)发芽和幼苗活力的影响在下一个生长季节之前。在 16 个香稻品种中,种子长度(4.8-7.5 毫米)、种子宽度(2.1-3.2 毫米)、测试重量(10.0-15.6 克)、外稃颜色(金黄色、稻草黄色、黑色)的遗传变异, 棕红色, 稻草背景尖端的紫色斑点)被注意到。在收获后储存的 4 个月内,发芽率稳步增加(93.0%,CV 4.9%),并在接下来的 2 个月内达到稳定水平。四个地方品种GandheswariKalonuniaKaminibhogRadhunipagal保持休眠状态长达 2 个月;而MohanbhogGandhamalatiGopalbhogBadshabhog在整个正常储存期间具有更好的发芽性。其中四个容器,黄麻制麻袋和瓦盆被发现适合于较高的发芽率(82.7-85.0%),以及产生的更好的苗Radhunipagal相比,非生物降解的材料制成的容器储存6个月稻(镀锌铁垃圾桶和聚丙烯袋)。此外,使用印楝叶有利于发芽速度(39.536.1%)相比,Radhunipagal水稻的幼苗活力与无印楝叶处理相比。与环境条件 (28±4°C) 相比,Lal Badshabhog水稻在低温 (8±2°C) 下储存 6 个月似乎更好,以获得更长的幼苗长度(20.819.3 厘米)和活力指数(18971733 )。

更新日期:2021-08-10
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