煙草種子存放與更新后農(nóng)藝性狀變化的初步研究

Agronomic Trait Change of Tobacco Seeds after Stored and Updated

摘要: 為探索長期儲藏在種子庫的及經(jīng)過更新的煙草種子是否會發(fā)生遺傳完整性和穩(wěn)定性的變化，通過對不同品種植物學(xué)性狀,、農(nóng)藝性狀在20 年前后變化的分析,，發(fā)現(xiàn)不同品種在植物學(xué)性狀上有一定的變異，主要表現(xiàn)在株型,、葉形的變化,，這種變化主要屬遺傳上的變異；在農(nóng)藝學(xué)性狀上也有較大變化,，特別是株高和葉數(shù)變化較大,，莖圍增加，這種變化可能有遺傳因素,，但主要是由外界環(huán)境變化引起的,。

Abstract: In order to investigate the changes of genetic integrity and stability of tobacco seeds after a long-term storage and update, several tobacco cultivars’ botanical characteristics and agronomic traits were tested. The results showed that botanical characteristics, including plant style and leaf style, changed in some degree after 20-year storage and seed update, which might be attributed to genetic variation. Some agronomic traits had significant change, such as plant height, leaf number, stem width, which were mainly caused by the environmental condition.

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