CAJ | 학술논문

通过人工增加对棉花UV-B辐射,研究在大田栽培和自然光照条件下人工模拟紫外辐射(UV-B,280-320nm)增加对棉花生理、品质和产量的影响.实验设置4个处理,每个处理的辐射剂量分别为0 W·m~(-2) (RO)、0.5W·m~(-2) (R1)、1W·m~(-2) (R2)、1.5 W·m~2(R3).测定棉花不同处理时期的叶绿素含量、可溶性蛋白质含量、脯氨酸(Pro)含量以及棉花的品质和产量.结果表明,随着UV-B辐射增强,棉花叶片叶绿素a、叶绿素b和总叶绿素含量以及可溶性蛋白质含量呈现先升后降的趋势,Pro相对含量增加,棉花产量和品质均明显降低.因此,UV-B辐射增强对棉花造成了一定程度的伤害.当辐射剂量超过棉花植株体内一定的阈值之后,伤害程度就越大,最终导致棉花产量下降,品质降低.
통과인공증가대면화UV-B복사,연구재대전재배화자연광조조건하인공모의자외복사(UV-B,280-320nm)증가대면화생리、품질화산량적영향.실험설치4개처리,매개처리적복사제량분별위0 W·m~(-2) (RO)、0.5W·m~(-2) (R1)、1W·m~(-2) (R2)、1.5 W·m~2(R3).측정면화불동처리시기적협록소함량、가용성단백질함량、포안산(Pro)함량이급면화적품질화산량.결과표명,수착UV-B복사증강,면화협편협록소a、협록소b화총협록소함량이급가용성단백질함량정현선승후강적추세,Pro상대함량증가,면화산량화품질균명현강저.인차,UV-B복사증강대면화조성료일정정도적상해.당복사제량초과면화식주체내일정적역치지후,상해정도취월대,최종도치면화산량하강,품질강저.
The objectives of this research were to study the influences of entranced ultraviolet radiation (UV-B, 280～320 nm) on physiological indicator, yield and quality of cotton fiber under cropland conditions. Through increasing UV-B radiation, with 0W·m~(-2) (R0),0.5 W·m~(-2) (R1)、1 W·m~(-2) (R2).1.5 W·m~(-2) (R3) for the four processing, the effects of enhancing Ullraviolet-Bradiation on chlorophyll content, soluble protein and free proline content of cotton leaves were studied. With the increase inUV-B radiation, chlorophyll content and soluble protein content increased at first and decreased after then.The relative content of proline was elevated, yield and quality of cotton decreased significantly. Enhancing UV-B radiation resulted in damage to cotton. When the radiation exceeds the threshold of cotton plant, led to the greater injury, resulted in the quality and cotton production reduce at last.