Generally speaking , leaf nitrogen content per unit leaf area increased under high irradiance and was significantly higher than those under low irradiance 損傷處理可使植株葉單位葉面積n含量降低,而單位葉重n含量卻比未受損植株高。
Optical microscopy and electron microscopy were employed to study the microstructure and ultrastructure of the leaves of low temperature germplasm and measure or count the lengths of diachyma cells , number of diachyma cells per unit leaf area , chloroplast number per diachyma cell , the number of diachyma cell layers and the number of granum lamella of low - temperature wheat germplasm 應(yīng)用光學(xué)顯微鏡和電子顯微鏡研究了小麥低溫種質(zhì)葉片顯微和超微結(jié)構(gòu),測(cè)量統(tǒng)計(jì)了葉肉細(xì)胞長(zhǎng)度、單位面積葉肉細(xì)胞數(shù)目、單個(gè)葉肉細(xì)胞中的葉綠體數(shù)目、葉肉細(xì)胞層數(shù)和葉綠體基粒片層數(shù)。