RESUMO
Cone and seed characteristics of Anatolian black pine were investigated in a clonal seed orchard for two years, 2002 and 2006. The orchard, originated from Kastamonu-Karadere seed stand was established in 1993 by using 1 year-old grafts in an area of 13 ha, at Hanönü-Günlüburun, northern Turkey and includes 30 clones. The results showed that, significant variation exists among clones for 14 of cone and seed traits for 2006. The clones had cone wet weight in range of 16.92 to 38.51g, whereas this value varied in range of 11.16 to 24.06 g for cone dry weight. Cone length varied from 55.19 to 74.43 mm, while cone width varied in range of 26.66 to 36.57 mm. The range of scale number and fertile scale number varied from 80.02 to 110.64 and 38.03 to 56.20, respectively. Among the clones, the seed and filled seed number were 6.70-24.97 and 5.79-21.12, respectively. The 1000 seed weight varied in range of 20.36 to 29.73 g. The respective values of average seed length and width were 6.29 mm and 3.57 mm, while wing length and width were 19.59 mm and 7.21mm. The average seed efficiency was 13.5%. Coefficients of variation among grafts (CVG ) were mostly bigger than among clones (CVC ), indicating high variation within the population. Year to year correlation coefficients for seed and cone characteristics were varied from moderate (0.58) to strong (0.83). The respective broad sense heritability values of clone mean basis (H2 ) for cone dry weight, cone width, 1000 seed weight were 0.77, 0.83 and 0.76. The seed efficiency had a H2 value of 0.43.
RESUMO
The present study was carried out on Paulownia tomentosa (6), Paulownia elongate (4), Paulownia fortunei (5) and Paulownia fortunei x tomentosa (1) origins at Kastamonu Forest Nursery. The seedling height growth (SH), root collar diameter (RCD), dry root percentage (DRP) and seedling percentage (SP) of one-year old seedlings of the origins were studied for comparing growth performance of the species and origins and discussing for guidance to field stage based on nursery stage. As a result, P. tomentosa x fortunei hybrid has the highest SH (72.62 cm) among the used species. Significant difference was determined among the origins as to the SH and DRP. The maximum SH were determined for P. tomentosa Beijing-Daxin (81.32 cm) and P. elongata Beijing-Daxin (80.76 cm) origins. The maximum DRP were determined for P. tomentosa Anhui-Tongling (77%) origin. There were no significant differences based on RCD and SP among the species and the origins. Among the parents, there were important diversities for SH and RCD. As a final remark, observations and evaluations of the Paulownia studies should be included with the clonal variation for further studies because of the observed growth variations within the population.
Assuntos
Magnoliopsida/classificação , Especificidade da Espécie , TurquiaRESUMO
Zeolite has many good features that makes it very attractive for nursery use as a growing media over others. This study was designed to investigate influence of different growing media and their mixtures (with zeolite and without zeolite) on morphological characters of scots pine seedlings. Twenty-one treatments of varying amounts of peat, fine pumice, coarse pumice, river sand, perlite and river sand were established and were sown with scots pine seeds. At the end of first growing period, 30 seedlings from each treatment were harvested and measured for height (SH), root collar diameter (RCD), root dry weight (RDW), stem dry weight (SDW) and total dry weight (TSDW). These parameters varied significantly among treatments and were lower in zeolite added media. SH negatively correlated with Na and K content and C/N ratio of growing media but positively correlated with Mn content of media. SDW and TSDW had positive correlation with N, Fe, Mn, total porosity and loss of ignition, and had negative correlation with pH, Ca, Na and K content.