Department of Botany, University of Sargodha, Sargodha, Punjab, Pakistan.
Department of Botany, University of Agriculture Faisalabad, Pakistan.
PLoS One. 2023 Jun 7;18(6):e0286736. doi: 10.1371/journal.pone.0286736. eCollection 2023.
Plant performance is mainly estimated based on plant architecture, leaf features and internal microstructural changes. Olive (Olea europaea L.) is a drought tolerant, oil yielding, and medium sized woody tree that shows specific structural and functional modifications under changing environment. This study was aimed to know the microstructural alteration involving in growth and yield responses of different Olive cultivars. Eleven cultivars were collected all over the world and were planted at Olive germplasm unit, Barani Agricultural Research Institute, Chakwal (Punjab) Pakistan, during September to November 2017. Plant material was collected to correlate morpho-anatomical traits with yield contributing characteristics. Overall, the studied morphological characters, yield and yield parameters, and root, stem and leaf anatomical features varied highly significantly in all olive cultivars. The most promising cultivar regarding yield was Erlik, in which plant height seed weight and root anatomical characteristics, i.e., epidermal thickness and phloem thickness, stem features like collenchymatous thickness, phloem thickness and metaxylem vessel diameter, and leaf traits like midrib thickness, palisade cell thickness a phloem thickness were the maximum. The second best Hamdi showed the maximum plant height, fruit length, weight and diameter and seed length and weight. It also showed maximum stem phloem thickness, midrib and lamina thicknesses, palisade cell thickness. Fruit yield in the studied olive cultivars can be more closely linked to high proportion of storage parenchyma, broader xylem vessels and phloem proportion, dermal tissue, and high proportion of collenchyma.
植物的性能主要基于植物结构、叶片特征和内部微观结构变化来评估。油橄榄（Olea europaea L.）是一种耐旱、产油的中型木本植物，在环境变化下表现出特定的结构和功能的改变。本研究旨在了解不同油橄榄品种在生长和产量响应中涉及的微观结构变化。2017 年 9 月至 11 月，在巴基斯坦恰克拉瓦尔巴尼农业研究所的油橄榄种质单位收集了来自世界各地的 11 个品种，并进行了种植。采集植物材料以将形态解剖特征与产量特征相关联。总体而言，研究的形态学特征、产量和产量参数以及根、茎和叶的解剖特征在所有橄榄品种中差异非常显著。在产量方面，最有前途的品种是 Erlik，其中植物高度、种子重量和根解剖特征（即表皮厚度和韧皮部厚度）、茎特征（如厚角组织厚度、韧皮部厚度和木质部导管直径）和叶片特征（如中脉厚度、栅栏细胞厚度和韧皮部厚度）最大。第二个最好的品种是 Hamdi，表现出最大的植物高度、果实长度、重量和直径以及种子长度和重量。它还表现出最大的茎韧皮部厚度、中脉和叶片厚度、栅栏细胞厚度。在所研究的油橄榄品种中，果实产量可以与较高比例的贮藏组织、较宽的木质部导管和韧皮部比例、表皮组织以及较高比例的厚角组织更紧密地联系起来。
