The effect of method and duration of storage on life ability of St. John's Wort (Hypericum androsaemum) seed

Abstract

Results of eight year research (2000-2007) of the quality of St. John's Wort seed relating to age of seed and type of packaging used for seed storage are presented in this paper. Seed was produced and treated additionally in 2000 prior to packaging of raw sees a sample was taken and placed on germination 4 x 100 seeds. Germination ability was considerably lower compared to seed investigated after one and several years of storage. Treated and packaged seed was stored in adequate storage in five types of packaging (wood, metal, natron, glass and jute). In subsequent years (2001-2007), samples were taken from each packaging type and placed on germination, 4 x 100 seeds. The best germination ability maintained up to 4 years (over 50%) was established in seed stored in natron packaging. After six years of storage this seed had germination ability of over 20%. The fastest diminishing of germination ability was established in seed stored in metal packaging (after 2 years it was bellow 40%, and after 4 years bellow 10%). Seed stored in wooden, glass and jute packaging maintained the germination ability up to 50% in first three years, after which the germination ability decreased rapidly. Seed stored in metal packaging lost germination ability fully after five years of storage (0%), and seed stored in glass packaging after six years, whereas seed stored in remaining three types of packaging demonstrated certain percentage of germination even after seven years of storage (mainly seed from natron packaging 6%). .

U radu su prikazani rezultati osmogodišnjih istraživanja (2000-2007. god.) kvaliteta semena kantariona u odnosu na starost semena i vrstu ambalaže u kojoj je seme čuvano. Seme je proizvedeno i dorađeno u 2000. godini. Pre pakovanja iz svežeg semena uzet je uzorak i stavljen na klijanje 4 x 100 semena. Klijavost je bila značajno slabija u odnosu na seme koje je ispitivano nakon jedne i više godina čuvanja. Dorađeno i upakovano seme čuvano je u propisnom skladištu u pet vrsta ambalaže (drvena, metalna, natron, staklena i jutana). Narednih godina (2001-2007) iz svih vrsta ambalaže uzimani su uzorci i stavljani na klijanje i to po 4 x 100 semena. Najbolju klijavost koja je očuvana do 4 godine starosti (preko 50%) imalo je seme čuvano u natron ambalaži. Ono je i posle šest godina čuvanja imalo klijavost preko 20%. Najbrže je klijavost opala kod semena čuvanog u metalnoj ambalaži (već posle dve godine ispod 40%, a posle četiri godine ispod 10%). Seme čuvano u drvenoj, staklenoj i juta ambalaži sačuvalo je klijavost do 50% do tri godine a onda je klijavost veoma brzo opala. Seme čuvano u metalnoj ambalaži izgubilo je klijavost u potpunosti posle pet godina čuvanja (0%), a ona čuvana u staklenoj ambalaži posle šest godina, dok je seme čuvano u ostala tri tipa ambalaže pokazivalo izvestan procenat klijanja i posle sedam godina čuvanja (najviše u natron ambalaži 6%). .