植物生理學其目的在于認識植物的物質代謝、能量轉化和生長發育等的規律與機理、調節與控制以及植物體內外環境條件對其生命活動的影響。包括光合作用、植物代謝、植物呼吸、植物水分生理、植物礦質營養、植物體內運輸、生長與發育、抗逆性和植物運動等研究內容。
測定植物組織的成分含量是植物生理學研究中不可或缺的一部分。
植物的基本組成物質如蛋白質、糖、脂肪和核酸以及它們的代謝都與其他生物(動物、微生物)大同小異。但是,植物本身又有一些獨特的地方,如:
①能利用太陽能,用來自空氣中的 CO2和土壤中的水及礦物質合成有機物,因而是現代地球上幾乎一切有機物的原初生產者。
②植物扎根在土中營固定式生活,趨利避害的余地很小,必須能適應當地環境條件并演化出對不良環境的耐性與抗性。
③植物的生長沒有定限,雖然部分組織或細胞死亡,仍可以再生或更新,不斷地生長。
④植物的體細胞具全能性,在適宜的條件下,體細胞經過生長和分化,就可成為一棵完整的植株。因此植物生理學在實踐上、理論上都具有重要的意義。
實驗步驟
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實驗結果
研磨后的樣品色澤均勻,可用于在糖類,酶活,有機酸等實驗中的測定。穩定的樣品研磨效果可保證更準確的實驗數據。
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