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首页> 外文期刊>Journal of Arboriculture >Flood-tolerance ranking of red and Freeman maple cultivars.
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Flood-tolerance ranking of red and Freeman maple cultivars.

机译：红色和Freeman枫树品种的耐旱等级。

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Red maple (Acer rubrum) is often recommended for use in wet soils, yet its extensive native range suggests there may be genetic variation for traits associated with flood tolerance. Likewise, genetic variation for flood tolerance may be captured within red maple cultivars making some more appropriate than others for use in wet or low oxygen soils. Two-year-old trees of 7 red maple cultivars ('Autumn Flame', 'Bowhall', 'Karpick', 'Northwood', 'October Glory', 'Red Sunset', and 'Schlesinger) and 4 Freeman maple (A. x freemanii) cultivars ('Armstrong', 'Autumn Blaze', 'Morgan', and 'Scarlet Sentinel') were ranked for flood tolerance by flooding the trees and characterizing photosynthesis, lenticel intumescence, and survival. Indicator trees representing the wet extreme of red maple's native range were also included for comparison. Net photosynthesis declined for all cultivars; however, 'Schlesinger'. 'Red Sunset' and 'Bowhall' had the highest net photosynthetic rates (ranging from 1.94 to 1.71 鎚ol/m2 per second) after 45 days of flooding. In contrast, 'Karpick', 'Autumn Flame', and 'Northwood' had net photosynthetic rates near 0. The extent of lenticel intumescence also varied among the cultivars with 'Schlesinger' and 'Bowhall' producing the longest lenticels. All of the 'Northwood' trees died, as did two-thirds of the 'Autumn Flame' trees. The cultivars were separated into 3 overall flood-tolerance rankings: high ('Schlesinger', 'Red Sunset', and 'Bowhall'), intermediate ('Armstrong', 'Morgan','October Glory', 'Scarlet Sentinel', and 'Autumn Blaze'), and low ('Karpick', 'Autumn Flame', and 'Northwood').
机译：通常推荐在潮湿的土壤中使用红枫（Acer rubrum），但其广泛的原生范围表明与耐旱性相关的性状可能存在遗传变异。同样，可以在红枫树品种中捕获耐旱性的遗传变异，使得某些品种比其他品种更适合在潮湿或低氧的土壤中使用。具有7个红槭品种（'秋天火焰'，'鲍威尔'，'卡尔皮克'，'诺斯伍德'，'十月荣耀'，'红色日落'和'施莱辛格）的两岁树和4个Freeman枫树（A. x freemanii）品种（“ Armstrong”，“ Autumn Blaze”，“ Morgan”和“ Scarlet Sentinel”）通过淹没树木并表征光合作用，皮孔膨胀和存活来对耐洪性进行排名。为了比较，还包括了代表红枫原生范围的极端湿润的指示树。所有品种的净光合作用均下降。但是，“ Schlesinger”。淹水45天后，“红色日落”和“鲍威尔”的净光合速率最高（每秒1.94至1.71锤酚/平方米）。相比之下，“ Karpick”，“ Autumn Flame”和“ Northwood”的净光合速率接近于0。在“ Schlesinger”和“ Bowhall”产生最长皮膜的品种中，皮膜的膨大程度也有所不同。所有的“诺斯伍德”树都死了，三分之二的“秋天火焰”树也死了。这些品种分为3个总体耐洪等级：高（“ Schlesinger”，“红色日落”和“ Bowhall”），中级（“阿姆斯特朗”，“摩根”，“十月荣耀”，“猩红前哨”和“秋天大火”和低调（“ Karpick”，“秋天火焰”和“诺斯伍德”）。

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