During the 2014 and 2015 seasons, peanut root anatomy studies were conducted under well-watered and under drought conditions using three peanut genotypes which are known to differ in their physiological responses to early- and mid-season drought (ICGV 98,305, ICGV 98,324 and Tifton-8). Cross sections of the newly formed roots revealed that the average vessel diameter and total vessel area in the first-order roots were significantly reduced under drought in ICGV 98,305 and ICGV 98,324, yet not in Tifton-8, which had the smallest vessel diameters and total area in both well-watered and drought treatments. The xylem vessel structure in newly formed roots of ICGV 98,324 was very responsive to changes in soil moisture content. This adaptive capacity of ICGV 98,324 to change xylem structure as soil moisture conditions change may provide plant breeders an important trait which will lead to better water-use efficiencies in both moist and drought conditions.

中文翻译：

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早季干旱下不同抗旱水平花生基因型根木质部解剖结构变化

在 2014 和 2015 季节期间，花生根解剖学研究在充足浇水和干旱条件下使用三种已知对早季和中季干旱的生理反应不同的花生基因型（ICGV 98,305、ICGV 98,324 和 Tifton -8). 新形成根的横截面显示，ICGV 98,305 和 ICGV 98,324 一级根的平均血管直径和总血管面积在干旱条件下显着减小，而在 Tifton-8 中则不然，Tifton-8 的血管直径和总面积最小。地区在充分浇水和干旱处理。ICGV 98,324 新形成的根中的木质部血管结构对土壤水分含量的变化非常敏感。ICGV 98的这种适应能力，