Asayansi, pamene iwo anawona chomera ichi, ndiye adagawidwa ngati wachibale wapafupi kwambiri, wodziwika ndi wokondedwa mu Europe vinca, kotero anali mu mtundu uwu wa zomera. Kwa nthawi yaitali chomera ichi chinkatchedwa Madagascar, kapena pinki, periwinkle. Koma patapita nthawi a botanist anayang'ana mozama ndikuzindikira kuti iwo anali kulakwitsa, kuti uyu si m'bale wa periwinkle, koma msuwani yekha.
Mitundu iyi yoyamba inasamukira ku mtundu wa Lochner, kenako inasamukira ku mtundu wa Ammocallis, ndipo mu 1837 inalowa mu mtundu wa cataract. Ngakhale asayansi atha kukhazikitsa dongosolo, mtundu uwu umagwiritsidwa ntchito kutcha pinki vinca, kapena pinki periwinkle, dzina loyenerera (catarratus) ndipo siligwiritsidwa ntchito masiku ano.
Mtundu wa Cattratus uli ndi mitundu 8 ya zomera, zomwe zambiri zimapezeka ku Madagascar. Chomera chimakula ku Indochina, India, zilumba za St. Mauritius, Java, Philippines, Cuba, Madagascar, Reunion.
Kumpoto kumatengedwa kuti m'nyumba chomera chosatha. Posachedwapa nthawi zambiri amagwiritsidwa ntchito kukongoletsa nyimbo zakunja m'chaka chimodzi. Chomeracho chikulima ku Western Transcaucasia, Kumwera kwa Kazakhstan, ndi Kuban.
Kusamalira mbewu.
Malo: dzuwa, lotetezedwa ku mphepo, malo otentha. Mitengo ya m'munda sayenera kubzalidwa m'munda wamaluwa, mwinamwake mvula yamkuntho, zomera zimasowa mpweya wabwino.
Chinthu chopangira: chonde, chosakanizidwa, popanda mchere wambiri, pH iyenera kukhala ya 5.5-5.8.
Padziko lapansi osakaniza timatenga mbali imodzi tsamba ndi sod land, peat, distillation ndi mchenga.
Kutentha kwa positi sikutanthauza chomera, chifukwa mu malo osungidwa nthaka imatha nthawi yaitali, ndipo izi ndizopindulitsa.
Mbali za kulima: Ku UK, chomeracho chinafalikira kale kuposa m'mayiko a ku Ulaya. Ku Netherlands, mbewuyi imayikidwa muzipinda zapadera, zotetezedwa ku mphepo.
Mbalame zomwe zimakhala zosavuta kukula mu chipinda cham'chipindamo, kupatulapo zimayamikira zomera, kotero zimayankha ku chisamaliro ndi maluwa ochuluka komanso ochuluka.
Kukula chomera bwino pawindo lawindo sill, koma kuchokera ku dzuwa dzuwa ndibwino kuti pritenyat. Komanso, chomeracho chiyenera kuwaza, kudyetsedwa kamodzi pa masiku 14-21. Kupaka pamwamba kumachitika ndi njira yothetsera mchere wambiri.
M'chilimwe, chomeracho mumphika chimatha kunyamula kubwalo, pomwe chiyenera kutetezedwa ku mphepo, kutentha ndi mvula. M'nyengo yozizira, zomera zimayenera kusungidwa pamalo ozizira ndi ozizira, ndi kutentha kwakukulu kwa madigiri 10-15 ndi chizindikiro chowonjezera. Poyamba kumapeto kwa nthambi, nthambi zimadulidwa ku 1/3.
Kubalana: Zipinda zapanyumbazi zimafalitsa zomera ndi mbewu. Kumapeto kwa nyengo yozizira, kapena kumayambiriro kwa masika, mbewu zimabzalidwa mpaka 1-2 cm. Kufesa kumaphatikizidwa ndi filimu yakuda, popeza kuti kumera kwa mbewu kumakhala mdima wamba. Ngati kutentha kuli 24 о С, ndiye pambuyo pa masiku khumi kudzapezeka mbande. Kutentha kumachepa mwamsanga pamene mbande zikuwonekera, ndiye ziyenera kuikidwa mu kuwala.
Chomera feteleza choyamba chimatenga masiku osachepera 14 chiyambireni. Mu feteleza, phosphorous sayenera kukhala yochulukirapo, zidzakhala bwino ngati nayitrogeni mu feteleza ili ngati mawonekedwe a nitrate.
Zigawo zimapangidwa bwino pamene chomera chimakula mpaka 6-8 cm mu msinkhu, ndi kukhalapo kwa mapepala anayi enieni.
Cataract, imatulanso mothandizidwa ndi zobiriwira za apical cuttings. Cuttings amaikidwa mu kuchapa mchenga, yokutidwa ndi pulasitiki thumba kapena mtsuko. Cuttings ingaperekenso mizu m'madzi.
Pa maganizo a prishchipke achinyamata amasiyana. Mitundu yamakono sichifunikira pinch, chifukwa chizindikiro cha kuwonjezeka kwa mbeu kumayambira. Komabe, kuti mupeze chitsamba chogwirana bwino, katarrhtal ya achinyamata iyenera kuthyoledwa kambirimbiri. Chomeracho chimabzalidwa kuchokera kwa wina ndi mnzake pamtunda wa 50 cm.
Kugwiritsa ntchito zomera.
Mitengo ya Catarrhtas imagwiritsidwa ntchito ngati chivundikiro chifukwa chakuti imatha kufalikira mofulumira, kudera lonse laulere, ndikuphimba impso ndi chophimba chobiriwira. Kutchuka kwa nthendayi kumachokera ku mafashoni okongoletsera okongoletsera m'mabhasiketi, omwe ankagwiritsidwa ntchito kuti azikongoletsera.
Ku India ndi ku Madagascar, ochiritsa anthu amatha kugwiritsa ntchito mankhwala odwala matenda a shuga, motsutsana ndi kukakamiza kuchepetsa kuthamanga kwa magazi, kuti athetse zilonda zosiyanasiyana.
Zomera za zomera zimenezi zinkasangalatsa kwambiri akatswiri ofufuza ku Canada ndi United States, kumapeto kwa nkhondo yachiwiri ya padziko lonse. Iwo adamva kuti asilikali omwe anali ku Philippines pa nthawi ya nkhondo anali kugwiritsa ntchito masamba a catarratus mmalo mwa insulini yomwe sankatha kufika panthawiyo.
Kafukufuku wasonyeza kuti kugwiritsa ntchito zotsamba zazomera sikungathandize kwenikweni kuchepa kwa shuga m'magazi. Komabe, muzilombo zamatenda omwe ali ndi khansa ya m'magazi, padali kusintha kwakukulu mu njira ya magazi yabwino.
Patangopita nthawi pang'ono, asayansi anatha kuchotsa kuzinyalala zamchere, zomwe zimagwira ntchito. Pachiyambi, kupanga mankhwalawa kunakhazikitsidwa: vincristine ndi vinblastine.
Mankhwala opangidwa ndi okonzeka ku cataract, kapena mavitamini okonzedwa bwino, komanso mafuta odzola, amachititsa kuti athandizidwe, koma nthawi zambiri amachititsa mavuto aakulu. Choncho, ngati chotupachi chikugwiritsidwa ntchito kuchipatala, ndiye kufunsa ndi kuyang'anira dokotala n'kofunikira.