椰枣树(date tree or date palm tree)是一种生长在非洲,西亚,南亚等的一种耐热,耐碱的植物,尤其在中东地区的种植规模尤为庞大。它的果实椰枣是一种在阿拉伯国家常见的水果,在阿拉伯人的生活中它扮演着重要角色,除了作为水果外甚至作...椰枣树(date tree or date palm tree)是一种生长在非洲,西亚,南亚等的一种耐热,耐碱的植物,尤其在中东地区的种植规模尤为庞大。它的果实椰枣是一种在阿拉伯国家常见的水果,在阿拉伯人的生活中它扮演着重要角色,除了作为水果外甚至作为人们的主食,同时它还可以用来酿酒,有很高的使用价值。因为它对阿拉伯人生活的重要性,所以很多的书籍都对它有所记载,最著名的则数《古兰经》和一些圣训集,其中对椰枣的描述成了流传至今的永恒的经典。展开更多
The architectural analysis of the young date palm （Phoenix dactylifera L.） root system （its form and its structure）, is necessary to describe its principal functions of absorption and anchoring. In this study the ...The architectural analysis of the young date palm （Phoenix dactylifera L.） root system （its form and its structure）, is necessary to describe its principal functions of absorption and anchoring. In this study the authors present an analysis of the root branching process. It allows them to understand the distribution of inter-lateral root length on the radicle and to account the development of the root system in the soil. Root architecture was studied from samples sprouted naturally in the oases of Chott el Ferikh （Gabes） and other plants grown in polyethylene bags under the shadow. This analysis has showed five categories of roots belonging to four different topological orders in the youthful phasis.展开更多
In date palm Phoenix dactylifera L. male （pollen bearing） and female （fruit bearing） inflorescences are on separate palms. To ensure good fertilization and better yield, artificial pollination is carried out in da...In date palm Phoenix dactylifera L. male （pollen bearing） and female （fruit bearing） inflorescences are on separate palms. To ensure good fertilization and better yield, artificial pollination is carried out in date plantations, where pollen harvested from male flowers are used for artificial pollination which is usually done manually. Often, the availability of male flowers becomes scarce due to the high demand to take up pollination during the short period of time when the female flowers are receptive. We assessed the comparative efficiency of using pollen to manually pollinate female date palm flowers in the field using sponge pieces charged with harvested pollen as compared to the traditional practice of the farmers using male inflorescences. Results revealed that fruit set （%）, fructification （%）, yield per bunch （kg） besides fruit weight, length and breadth were statistically similar in the two pollination methods evaluated. The sponge method of manual pollination can therefore serve as a viable alternative to the traditional method of pollination with the possibility of using stored pollen especially where male palms are scarce and pollen is difficult to obtain.展开更多
文摘椰枣树(date tree or date palm tree)是一种生长在非洲,西亚,南亚等的一种耐热,耐碱的植物,尤其在中东地区的种植规模尤为庞大。它的果实椰枣是一种在阿拉伯国家常见的水果,在阿拉伯人的生活中它扮演着重要角色,除了作为水果外甚至作为人们的主食,同时它还可以用来酿酒,有很高的使用价值。因为它对阿拉伯人生活的重要性,所以很多的书籍都对它有所记载,最著名的则数《古兰经》和一些圣训集,其中对椰枣的描述成了流传至今的永恒的经典。
文摘The architectural analysis of the young date palm （Phoenix dactylifera L.） root system （its form and its structure）, is necessary to describe its principal functions of absorption and anchoring. In this study the authors present an analysis of the root branching process. It allows them to understand the distribution of inter-lateral root length on the radicle and to account the development of the root system in the soil. Root architecture was studied from samples sprouted naturally in the oases of Chott el Ferikh （Gabes） and other plants grown in polyethylene bags under the shadow. This analysis has showed five categories of roots belonging to four different topological orders in the youthful phasis.
文摘In date palm Phoenix dactylifera L. male （pollen bearing） and female （fruit bearing） inflorescences are on separate palms. To ensure good fertilization and better yield, artificial pollination is carried out in date plantations, where pollen harvested from male flowers are used for artificial pollination which is usually done manually. Often, the availability of male flowers becomes scarce due to the high demand to take up pollination during the short period of time when the female flowers are receptive. We assessed the comparative efficiency of using pollen to manually pollinate female date palm flowers in the field using sponge pieces charged with harvested pollen as compared to the traditional practice of the farmers using male inflorescences. Results revealed that fruit set （%）, fructification （%）, yield per bunch （kg） besides fruit weight, length and breadth were statistically similar in the two pollination methods evaluated. The sponge method of manual pollination can therefore serve as a viable alternative to the traditional method of pollination with the possibility of using stored pollen especially where male palms are scarce and pollen is difficult to obtain.
