Mgbasa ozi ugboro abụọ
Biennial bearing (ma ọ bụ nke ọzọ) bụ okwu ejiri na pomology na-ezo aka na osisi ndị nwere ibu ihe ọkụkụ na-adịghị mma site n'afọ ruo n'afọ. N'afọ "on" a na-edozi mkpụrụ osisi dị ukwuu, na-eduga na obere mkpụrụ osisi. Ibu ibu na isi alaka nwere ike ịdị oke maka nguzogide ha, na-eme ka ha gbajie. Ihe ọzọ dị mkpa ga-esi na ya pụta bụ na ntinye ifuru ga-adị ala, na afọ na-esote ga-abụ afọ "apụ" (obere mkpụrụ).
Omume a nwere ike ịbụ n'ihi homonụ nke osisi, karịsịa gibberellins na-emepụta n'ime afọ "na" n'ime embrayo nke mkpụrụ osisi na-eto eto. Enwere ike ịkpata ya site na mbelata nke ihe nchekwa carbohydrate dị na osisi ahụ
Mkpụrụ osisi abụọ na-adịkarị na mkpụrụ osisi ụfọdụ dị ka mango, apụl, pear, apricot na avocado, ọ fọrọ nke nta ka ọ ghara ịdị na mkpụrụ vaịn.
Biennial bearing bụ ihe a na-ahụkarị na mmepụta Kọfị Arabica na Etiopia na East Africa, na n'ezie n'ụwa niile na-akụ kọfị. Na Biennial na-amị ezigbo ma ọ bụ nke magburu onwe ya (bumper) na-esote ihe ọkụkụ na-adịghị mma, nke na-amịa obere mkpụrụ n'afọ na-esochi. Ihe omume a na-eme n'enweghị ihu igwe na ihu igwe, nke mere na ọbụna mgbe ọnọdụ ihu igwe dị mma maka ezigbo ihe ọkụkụ, Mkpụrụ osisi nwere ike ịdị njọ. Enwere ike inwe ọdịiche okpukpu ise (x5) n'etiti afọ ndị na-abanye na ndị na-adịghị, ọ bụ ezie na n'ọnọdụ ndị siri ike enwere ike inwe ọdịdị okpukpu iri (x10) na Etiopia na mpaghara ndị dị n'Ebe Ọwụwa Anyanwụ Afrịka.
Usoro mmepụta ihe ubi nke afọ abụọ bụ n'ihi nkesa nke ihe onwunwe nke osisi ahụ: n'afọ 'na' na-amị mkpụrụ, osisi kọfị na-etinye ihe onwunwa ya n'ịmepụta ihe ọkụkụ na mmefu nke uto ahịhịa (ọganihu osisi na ọkachasị mmepe osisi na mmepụta okooko osisi); n'afọ "off" osisi ahụ ga-emezi maka ụkọ ahịhịhịa a, na mmepụta nke okooko osisi na mkpụrụ osisi.
Mkpụrụ osisi na-amụ nwa ugboro abụọ nwekwara ike ịbụ mmeghachi omume sitere n'osisi na-achịkwa ọnụ ọgụgụ ndị na-eri ibe ha nke nwere ike imebi ihe ịga nke ọma nke ntolite. A maara echiche a dị ka echiche afọ ojuju nke anụ na-eri ibe ya.[1]
Enwere ike ibelata ma ọ bụ fọrọ nke nta ka ọ kpochapụ ibu abụọ site na iji ụzọ dị iche iche, gụnyere ịkpụchasị, mgbakwunye nke fatịlaịza, ịgba mmiri na-achịkwa na iji clones ma ọ bụ cultivars ahọpụtara.
Nlekọta ubi
[dezie | dezie ebe o si]Enwere ike Mbelata nsogbu a site na ibelata okooko osisi na mkpụrụ osisi.
Ebem si dee
[dezie | dezie ebe o si]- ↑ Tachiki (2010). "Both seedling banks and specialist seed predators promote the evolution of synchronized and intermittent reproduction (Masting) in trees". Journal of Ecology 98 (6): 1398–1408. DOI:10.1111/j.1365-2745.2010.01729.x.