Abstract: The major quality factors of Newhall orange from various spots with different latitude within orange superior regions were tested.The result of liner regression analysis showed that the content of TSS and TA had a significant, the positive linear relationship with latitude.The ratio of TSS to TA, the peel yellowness, the color strength and the peel color angle had a significant and negative linear relationship with latitude.The Vit C content was positively correlated with latitude.

Key words: Newhall orange, fruit quality, latitude, liner regression formulation

摘要： 以纽荷尔脐橙为试材,分析了我国甜橙优势区域内不同纬度地区纽荷尔脐橙果实主要的品质指标。结果表明,纽荷尔脐橙果实的多数品质指标随纬度的变化呈现有规律的变化;线性回归分析结果显示,纽荷尔脐橙果实几项品质指标与纬度的相关性为:可溶性固形物含量呈显著线性正相关,可滴定酸含量呈极显著线性正相关,固酸比呈极显著线性负相关,果皮黄色度和着色强度呈极显著线性负相关,色调角呈显著线性负相关,VitC含量与纬度的线性关系接近显著程度。

关键词: 纽荷尔脐橙, 果实品质, 纬度, 线性回归分析