| 词汇 | petiole |
| 语种 | 英语、汉语、英汉翻译、汉英翻译 |
| 释义 | BETA Examples of petiolepetiole isn’t in the Cambridge Dictionary yet. You can help! In young plantings leaf area could be estimated from observations of petiole crosssection area. A subsample of 20 randomly chosen plants was partitioned into stem, leaf, petiole, peduncle and fruit components and oven dried. The continual renewal of petioles may produce an equilibrium rather than a non-equilibrium system for this beetle community. Three of these translocations resulted in small amounts of food body production by the new petiole. To examine possible induction of food bodies by the coccinellids, 20 beetles from 20 separate plants were moved to petioles without food bodies. Petiole with dorsal lateral carinae strongly elevated over basal half, much weaker posteriorly, but extending to posterior margin. In these experiments, excised tomato leaflets with petioles were used instead of leaf discs. Petiole with dorsal lateral carinae elevated, diverging posteriorly, but extending to posterior margin. Leaves were numbered using an indelible marker pen, close to the midrib and c. 1 cm from the petiole. The inner leaves were cut at the base of the petiole and the muslin cylinder was removed from the leaves. The fauna of petioles was reared individually in plastic bags for c. 1 mo and finally dissected. Very old, partly decomposed or fresh, recently fallen petioles were not collected. Immediately after oviposition, eggs measured, on average 0.30 0.009 mm long (including the petiole) and 0.13 0.002 mm wide (n 10). This may indicate that some kind of general pattern of species composition of dead petioles exists, whatever host plant the petioles come from. Ten to thirty petioles were picked arbitrarily from the ground and from vegetation up to 4 m above the ground. The food bodies were associated with coccinellid beetle larvae that inhabit the petioles. Petiole with dorsal lateral carinae strongly elevated over basal half, weaker posteriorly but reaching the posterior margin. Food items were assigned to one of the following categories: buds, flowers, mature fruit, immature fruit, mature leaves, immature leaves, petioles, seeds. |
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