叶柄薄壁细胞存在晶体，叶柄的导管管径比较大，有大量的通气组织。
The crystals exist in parenchyma cells of its petioles. Its petioles have big vessels and much aerenchyma.
结果表明：TDZ对赤霞珠离体叶片、叶柄不定芽再生有诱导作用，对叶片、叶柄的最高诱导率分别为18.06%和28.57%；
The result indicated that TDZ had effect on the adventitious buds induction of "Carbernet Sauvignon". Adventitious bud regenerating rate from leaf and petiole is 18.06% and 28.57%, respectively.
干烧心的始发病部位主要在叶缘和叶柄，症状主要表现为斑点和枯边，水渍只有50%的材料表现，心叶的症状表现与品种有密切关系。
The starting of tip-burn mainly on leaf's marginal and stem. Spot and rot are it's main symptoms, only 50% material show water strain. There is deep relation between symptoms and varieties.
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