貴州烤煙種質(zhì)資源主要特征特性的遺傳多樣性分析
Genetic Diversity of Main Charateristics in Flue-cured Tobacco Germplasm in Guizhou Province
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摘要: 為進一步挖掘貴州烤煙種質(zhì)資源潛力，給烤煙新品種選育創(chuàng)造條件,，對貴州省煙草科學研究所保存的302 份烤煙種質(zhì)資源主要性狀的遺傳多樣性進行了分析和比較,。結(jié)果表明，4 個形態(tài)性狀,、8 個農(nóng)藝性狀,、7 個化學成分分析指標和6個評吸指標都存在著廣泛的遺傳多樣性?？緹熎贩N資源在株高,、莖圍、節(jié)距,、葉長,、葉寬和大田生育期6 個性狀上的遺傳多樣性指數(shù)(H′)較高，存在較大的變異,；在化學成分分析指標中,，煙堿、總糖,、總氮,、鉀、蛋白質(zhì)5 個指標性狀的遺傳多樣性指數(shù)(H′)較高,，表現(xiàn)較大的變異,；在評吸結(jié)果中，香氣質(zhì),、吃味,、雜氣、評吸總分4 個指標性狀的遺傳多樣性指數(shù)(H′)較高,，變異較大,；并且形態(tài)特征性狀內(nèi)的變異也相當豐富，這些都是貴州烤煙種質(zhì)資源遺傳多樣性的重要特征,。Abstract: The genetic diversity of major characteristics in 302 flue-cured tobacco germplasm from Guizhou Tobacco Research Institute was analyzed and compared in this paper for their further utilization. The results showed that 4 morphological characters, 8 agronomic characters, 7 chemical constituents were wildly variant. The indexes of genetic diversity (H’) were relatively high on plant height, stalk circumference, pitch, leaf length, leaf width and growth duration after transplant. However, the H’ of nicotine, total sugar, total nitrogen, potassium and protein were highly aberrant. For the smoking results, the H’ of aroma quality, flavor, offensive odor, total score were aberrant, and the H’ among morphological characters were also abundant.
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