The role of calcium, boron and some divalent ions in leaf tipburn of strawberry
The role of calcium, boron and some divalent ions in leaf tipburn of strawberry
复制标题
钙、硼及部分二价离子在草莓叶尖烧伤中的作用
DOI：
10.1016/0304-4238(74)90039-9
复制
发表时间：
1974
影响因子：
4.3
通讯作者：
C. Guttridge
中科院分区：
文献类型：
--
作者：
G. Mason;C. Guttridge
草莓叶尖烧在英国的一些品种中经常发生在夏季户外，尽管通常只是轻微的。在温室中偶尔会发生严重的暴发。这种损害在叶片出现时出现，但在叶片展开后最为明显。虽然生根培养基中硼或钙的缺乏可引起这种病症，但在营养液中这些元素自由供应时也会发生。在既不缺乏钙也不缺乏硼的地方，将钙盐（但不是硼酸）的水溶液滴在芽和新生叶上，大大减少或防止了尖烧。含锰、镁或锶盐的滴剂也能减少烧尖，而含草酸盐或柠檬酸盐的滴剂则能诱发烧尖。在滴剂中加入少量EDTA能降低锰、镁盐的效力，在较小程度上也能降低锶盐的效力，但不能降低硝酸钙的效力。有证据表明，烧尖是由于在叶片出苗前和出苗期间局部缺钙引起的，这是由于根部钙缺乏，或者更常见的是由于钙的吸收或运输速率不足。
Strawberry leaf tipburn occurs commonly in some cultivars in Britain during the summer outdoors, although usually only mildly. Outbreaks are occasionally severe in glasshouses. The damage arises at the time of leaf emergence, but is most evident after leaf expansion.Although the disorder can be induced by deficiencies of boron or calcium in the rooting medium, it also occurs where these elements are freely supplied in nutrient solutions. Where neither calcium nor boron were deficient, drops of aqueous solutions of calcium salts (but not of boric acid) applied to buds and emerging leaves greatly reduced or prevented tipburn. Drops containing manganese, magnesium or strontium salts also reduced tipburn, while drops containing oxalate or citrate induced it. The addition of small amounts of EDTA to the drops decreased the effectiveness of the manganese, magnesium and, to a lesser extent, strontium salts, but not that of calcium nitrate.The evidence suggests that tipburn is caused by a localised shortage of calcium occurring just before and during leaf emergence, resulting either from a deficiency of calcium at the roots or, more frequently, from an inadequate rate of uptake or transport of calcium.