Citrus (citrus) Rutaceae of a genus. Often called citrus. The main feature is the berry of special structures, so called citrus fruit, oil spots pericarp oil, also known as cells, the innermost mesocarp white line mesh structure, called the orange-white or orange network, endocarp by a number of heart mature and called percutaneous balloon constitute scoop, scoop capsule wall cells develop into spindle-shaped translucent crystals meat juice bar called cells, often slender stem cell juice. Common wild species are: ① Yichang orange, is the genus of the most hardy species, wing leaves large, flesh and even a little sour and bitter, unbearable to eat. ② lemon, China is still wild, but usually used as a rootstock cultivation, the fruit vinegar material used as substitutes or pickled preserved fruits. ③ citron citron or called, is the only species of the genus with a single leaf (but hybrids have a single lobule), it is easy to identify. Xishuangbanna, Yunnan produced citron, largest, one of up to 2 kg, and its variants bergamot (Figure 1) due to the long line of asexual reproduction has become not seed the garden plants, its thick rind than the flesh. Expectorant cough medicine for. ④ grapefruit (Fig. 2), the long-term cultivation, varieties and more lines to flesh sour flavor can be divided into two types of grapefruit and sweet grapefruit to flesh color red grapefruit and pomelo can be divided into two categories. ⑤ grapefruit, sweet orange (Figure 3), lemon and lemon is the genus to the maximum number of four cultivated fruit in the world. Its edible fruit, or used to make juice, jam.
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No. 2
Citrus with a single compound, to form a leathery rind of citrus fruit
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Wikipedia Encyclopedia
ganju shu Citrus Citrus; oranges Rutaceae of a genus, often called citrus. The main feature is the berry of special structure, which is also known as citrus fruit, oil spots pericarp oil, also known as cells, the innermost mesocarp white line mesh structure, called the orange-white or orange network, a plurality of the peel Heart mature and called percutaneous balloon constitute scoop, scoop-sac walls of translucent crystal cells develop into spindle-shaped cells meat section called juice, juice sacs often slender stalk, creamy white or green cotyledons, single or multiple embryos, or single, multi-hybrid embryos. Which may have more than one embryo is sexual embryo, and the rest is asexual embryo, which is composed of beads in heart tissue cells invade sac formed after repeated division. Clones with a strong embryo viability, poor sexual embryo viability, often during the course of development. Originated in southeast Asia, most types of hi sunshine warm weather, winter is not the leaves, there is a fleeting period of dormancy. Fruit juice sac structure contains a lot of water and sugar, can make a significant dry seeds through the dry season. From the aspects of physiology, biochemistry, ecology and morphology, etc. It seems unlikely the genus originated in the tropics. They are the most suitable habitat is subtropical monsoon forest clear dry zone. China south of the Yangtze River, especially in the south central Indochina Wuling is the center of origin of this genus of plants, plant cultivation and origin of modern cultivation center is also the case. Chinese citrus distributed in North limiting, south slope, barberry Mountain, Shanxi Linfen basin south of the valley areas, the northern margin of only a few species can be planted in open field. Chinese citrus cultivation. Dating back at least 2,400 years of history, the South Songhan Yan straight "Orange recorded" began in the 1178, is the world's first citrus monographs. Polymorphic species and species of citrus conceptual issues, divergence, there are two schools of thought: ① to long Saburo Tanaka, represented that this genus has 159 kinds (statistics as of 1969); ② to WT Swain Siegel represented that only 16 kinds and several variants, some scholars think that India and the United States, 30 to 40 species. Chinese citrus horticulturist Mian had more to this genus subdivided into five genera. Reasons for the polymorphic genus can be broadly attributed to: ① higher frequency mutations (including chromosomal aberrations), mutations in germ cells, can also occur in somatic cells, which often lead to mutant variants with sticks, such as ③ natural hybridization between the species of plants; satsuma mandarin and grapefruit is the product of some mutant strains of; ② polyploidy, can be bred through artificial polyploidy hybrid offspring, such as high-yielding tetraploid Lisbon lemon Even among hybrid phenomenon is quite common, and produce fertile offspring, such as Hunan cut oranges, Jiangxi three lakes of red, orange, etc. Guangdong banana; ④ apomixis (apomixis), through the bead heart tissue cells to multiply offspring, it is often more than embryonic, more complex is that most of the species are facultative apomixis (facultative apomixis), a flower that is in the same line in both sexual reproduction, while the line apomixis, therefore, At the same may be seed in a sexual embryo and embryo clones exist several genes such apomictic species hybridization fertile because factors, such as the source to the complex; ⑤ artificial _select_ion, most of the genus economic trees, thousands of years, humans change their traits play a dominant role. Common representative species of wild species are: ① Yichang orange, widely distributed in the north of the Five Ridges to about 34 ° latitude regions, growth is still high limit of normal growth of about 2500 meters above sea level, the temperature dropped to -11.5 ℃, is the genus The most hardy species, the species-wing leaves large, it leaves the body of a width of at least half of its flesh is very sour and a little bitter, unbearable to eat. ② □ lemon, China is still wild, but usually used as a rootstock cultivation, the fruit vinegar material used as substitutes or pickled fruits, juices after Vietnam is often used as a soft hair shampoo agent, and the rest are all cultivated species . ③ citron citron or called, is the only species of the genus with a single leaf (but hybrids have a single lobule), it is easy to identify. Xishuangbanna, Yunnan produced citron, largest, one of up to 2 kg, and its variants bergamot (bergamot Figure 1) due to the long line of asexual reproduction has become not seed the garden plants, its thick rind than the flesh. Used as an expectorant cough medicine. ④ grapefruit (Figure 2 grapefruit), long-term cultivation, varieties strains lot to flesh sour flavor can be divided into two types of grapefruit and sweet grapefruit to flesh color red grapefruit and pomelo can be divided into two categories. Sweet and sour grapefruit and grapefruit contain red grapefruit and pomelo. Wild traits of strong acids grapefruit, some sweet grapefruit varieties, species Citrus grandis need to improve their fruit when rates tend to self-described pomelo flower infertility. Acid addition grapefruit
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English Expression
n.: Citrus, (Citrus Linn., citrus linn.
Thesaurus
citrus
Related Phrases
fruiter
Rutaceae
Poncirus Raf.
jinganshu
Wikipedia Daquan
organism
chemistry
vegetation extract
yangxiaodong
costermonger
Artificiality Cultivate of breed
Containing Phrases
citrus fruit
any of a group of related trees including the lemon, lime, orange and grapefruit