RESEARCH ON SEED GERMINATION AT ALOPECURUS PRATENSIS L. PUBLISHEDValentin Leneschi, Luminiţa Cojocariu
Appropriate assessment (genetic, ecological, physiological, chemical, etc..) attributes of plants collected from pastures flora is a prerequisite for recovery of potential values which are hidden in each collected source (Cristea M., 2006). In fact it is the ultimate goal of all work done on line of sustainable use of biodiversity prospecting - collection - research – conservation (usage) which requires an intensive labor, and high financial costs for materials to ensure that in end society can access to goods and services that biodiversity can provide. It is important not to lose a number of valuable biotypes from the spread species in spontaneous flora of grasslands and some, unfortunately, are neither studied nor used at the desired level, such as species Alopecurus pratensis L.. This plant has not been studied very much abroad and with much less in Romania, which is emphasized by the fact that the official list of varieties in Romania there is no approved variety of Alopecurus pratensis L.. Therefore in this paper we specifically targeted on Alopecurus pratensis L. seeds, which are actually planting material, knowing that there are very many problems to solve related to the propagation of this species. The purpose of this paper is to determine the time required by Alopecurus pratensis L. seeds to mature to be sown, and to determine their germination capacity. In this sense we conducted two laboratory experiments, to see the time in days taken from harvest to germination, and in the second we studied seed germination of seven biotypes studied compared with the variety Alpha (Saatzucht Steinach, Germany) for Alopecurus pratensis L . As biological material studied we used seeds collected from biotypes of Alopecurus pratensis L. collected in 2009 in the Banat area. Biotypes from the meadows of the area localities: Remetea Mare Topolovăţu Mare, Lugoj, Traina Vuia, Sinersig, Buzias and Albina. The seeds were harvested from May 25 - June 10, 2009. The seeds collected from the seven biotypes were prepared to germinated at a temperature of 22 ° C in germinator, every 14 days from harvest, from June 25 to October 28. It is ascertained that after four months, the first seeds germinated (biotype of Remetea Mare and Albina), and in the next days the other biotypes germinate. In the second laboratory experiment, mature seeds of Alopecurus pratensis L. biotypes gathered were set to germinated with the Alpha variety witness to emphasize the proportion of seeds germinated. While at the Alpha German variety, the seed germination was 78%, the percentage of germination in the studied biotypes was very small except for Sinersig biotype (52%).
Alopecurus pratensis L.; biotypes; seed germination; maturation; germinative capacity