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对８个陆地棉（Ｇ．ｈｉｒｓｕｔｕｍＬ．）杂种及其亲本的四种生理生化指标进行了测定，并研究了这些指标与杂种产量优势的相关性，结果表明：幼芽匀浆互补法对Ｆ１皮棉超亲优势、中亲优势的预测相符率分别为８７．５％和７５．０％；杂种萌动种子ＡＴＰ含量普遍高于双亲平均值。超亲优势、中亲优势与杂种ＡＴＰ含量及双亲ＡＴＰ含量的平均值均呈正相关，且中亲优势与杂种ＡＴＰ含量相关显著（ｒ＝０．７１８８，Ｐ＜０．０５）；杂种产量优势与盛蕾期、盛花期的叶绿素ａ含量及双亲叶绿素ａ含量的平均值无规律性相关，但蕾期杂种的叶绿素含量均高于双亲，而花期则不表现出此规律性；杂种种子全磷含量普遍高于双亲平均值。超亲优势与杂种全磷含量及双亲含量的平均值均呈负相关，且与杂种全磷含量相关显著（ｒ＝０．８１２２，Ｐ＜０．０５）。中亲优势与杂种全磷含量和双亲含量的平均值相关不明显。
Four physiological and biochemical indexes of eight G. hirsutum L. hybrids and their parents were measured, and the correlation between these indexes and the heterosis of hybrids was studied. The results showed that: The coincidence rates of super-pro-dominant and middle-pro-dominant were 87.5% and 75.0%, respectively. The ATP content of hybrid germinating seeds was generally higher than that of their parents. There was a positive correlation between the heterosis and the progeny in the hybrids and the average ATP content in the parents, and the correlation between the pro-parents and the hybrid ATP content was significant (r = 0.7188, P <0.05) The average chlorophyll a content at full bloom and full bloom was not correlated with the average value of chlorophyll a content in parents, but the chlorophyll content in hybrids was higher than that in parents, but not in florescence. The total phosphorus content Generally higher than the average of parents. There was a negative correlation between the transmembranous heterosis and the mean of hybrid total phosphorus content and parental content, which was significantly correlated with the total phosphorus content of hybrids (r = 0.8122, P <0.05). There was no obvious correlation between the pro parental advantage and the mean of hybrid total phosphorus content and parental content.