Geographical Variation in Bud-burst Timing of Zelkova serrata Provenances

Variation in cold hardiness and carbohydrate concentration from dormancy induction to bud burst among provenances of three European oak species.

Although cold hardiness is known to be a major determinant of tree species distribution, its dynamics and the factors that regulate it remain poorly understood. Variation in cold hardiness and carbohydrate concentration, from dormancy induction until bud burst, were investigated in populations of two deciduous (Quercus robur L. and Quercus pubescens Willd.) and one evergreen (Quercus ilex L.) E...

The bud is all in the timing

The bud is all in the timing new study by Schenkman et al. on page 829 reveals that the subcellular localization of yeast budding proteins can be determined by the time the genes are expressed. The genes BUD8 and BUD9 are required for establishment of the bipolar budding pattern in normal diploid cells, in which both poles are specified as potential bud sites. Although the two proteins are simi...

Life cycle, Ecological Characteristics, and Control of Trachys yanoi (Coleoptera: Buprestidae), an Important Pest of Zelkova serrata

This study was conducted to elucidate the life cycle and the ecological characteristics of Trachys yanoi Y. Kurosawa, an important pest of Zelkova serrata (Thunb.) Makino. Life cycle, mortality rates in developmental stages, annual population dynamics, and early leaf abscission were investigated. Adults emerged from under the bark of Zelkova trees in April and fed on Zelkova leaves. Females lai...

Redescription and geographical variation of Monopeltis guentheri Boulenger (Amphisbaenia, Reptilia)

Bud burst timing in Picea abies seedlings as affected by temperature during dormancy induction and mild spells during chilling.

In trees adapted to cold climates, conditions during autumn and winter may influence the subsequent timing of bud burst and hence tree survival during early spring frosts. We tested the effects of two temperatures during dormancy induction and mild spells (MS) during chilling on the timing of bud burst in three Picea abies (L.) Karst. provenances (58-66 degrees N). One-year-old seedlings were i...