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Key message DNA contents of Chinese 134 bamboo species were first time announced, and FISH of 45S rDNA shows that paleotropical woody bamboo species may be originated from a multi-source system. Abstract Woody bamboo mainly includes two types of species: the temperate woody bamboo and the tropical woody bamboo. Both vary widely in genome sizes, chromosome number, and ploidy. In this study, the DNA...
Key message Radiation use efficiency values estimation based on the biomass increment (one approach) and on NPP from eddy covariance (two approaches) estimation of NPP brings the values of 0.13, 0.40, and 0.47g (C) MJ−1, respectively. Abstract The productivity of terrestrial ecosystems is primarily reliant on the absorption of solar radiation energy and its conversion into biomass. Monteith (1977)...
Key messageAraucaria bidwilliihas cryptogeal germination, with seedlings not starting photosynthesis for several months after imbibition. Our results indicate that this complex process is metabolically relatively efficient. Abstract Araucaria bidwillii (bunya pine, Araucariaceae), an Australian rainforest conifer, produces heavy (15–20 g fresh mass) recalcitrant seeds that feature an unusual cryptogeal...
Key message The present model indicates that possibility of leaf biomass constancy in forest stands is not so high, and that forest stand leaf biomass declines after canopy closure. Abstract Kira and Shidei (Jpn J Ecol 17:70–87, 1967) and Odum (Science 164:262–270, 1969) proposed a classical hypothetical trend that leaf biomass of a forest stand shows a more or less constant level after the initial...
Key messageAlong a fire frequency gradient, we found a savanna tree species had the greatest below ground decay compartmentalization after coppicing as compared to other resprouting species located at mesic gradient positions. Abstract In pyrophilic ecosystems, woody plants are repeatedly injured or topkilled (i.e. aboveground tissue is killed) by frequent fires, and many woody species persist in...
Key message Sapwood area and the radial growth rate of the trunk follow the same pattern at breast height, with an initial increase and subsequent constant value, resulting from the increasing growth allocation toward the crown rather than tree decline. Heartwood area and heartwood volume in the trunk increase more rapidly after this shift occurs. Abstract Sapwood (SW) and heartwood (HW) are two...
Key message Applying paclobutrazol at dormancy induction inhibited shoot apical meristem mitotic activity, thereby decreasing rate and duration of needle-primordium initiation and thus needle-primordium number in terminal buds ofPicea marianaseedlings. Abstract The effect of applying various rates of paclobutrazol (an inhibitor of gibberellic acid biosynthesis) at dormancy induction on shoot apical...
Key messageChanges in cellular contents of ray parenchyma cells during the formation of reaction zone differ between earlywood and latewood in the sapwood ofCryptomeria japonica. Abstract Changes over time in the cellular contents of xylem parenchyma cells provide important clues to the mechanism of the early events in the wound reaction of trees. In this study, we monitored the events that occur...
Key message The analysis of the growth behaviour, wood anatomical, and eco-physiological traits of twoBougainvilleagenotypes, trained to two shapes and subjected to different irrigation regimes, fully supports the idea that structural properties interact with cultural practices (i.e., training) in determining the adaptive capability of plants, hence their productivity and survival. Abstract Bougainvillea...
Key message Ozone-induced reduction in the whole-plant dry mass of high-fertilisedFagus crenataseedlings was offset by the increase in leaf area, although the exposure to ozone decreased net photosynthetic rate. Abstract To clarify the effects of ozone (O3) on the growth of Fagus crenata seedlings under different soil nutrient conditions, seedlings were grown for two growing seasons under nine treatments...
Key messageHigh P homogeneously applied in roots reduced growth and nitrate uptake. High P in a patch reduced N in tissues but did not reduce growth, because root hydraulic conductivity increased. Abstract Little is known about consequences of nutrient imbalances, i.e., when the increase of one nutrient’s availability, in non-toxic concentration, reduces plant growth, because other nutrient availability...
Key messageWind, salt spray, and the proximity to the coastline significantly caused the variation of tree shape and dry mass density ofCasuarina equisetifoliaL. planted in coastal areas. Abstract Despite negative effects of exotic plants, they play an important role in the erosion control and the accumulation of wind-borne deposits in coastal areas. Identifying the adaptive strategies of exotic...
Key messageOsmoprimed seeds increased the abundance of pGlcT proteins. Osmopriming together with heat shock increased the abundance of RBR proteins. NAD-ME increased when osmoprimed and heat-shocked seeds were imbibed at low temperature. Abstract The purpose of seed priming is to accelerate and synchronize germination and to increase stress tolerance through the activation of genes that function...
Key message The study found an increased investment into stem growth (compared to root growth) if trees were surrounded by a complementary species. This response is consistent with known patterns about root–stem allometry under favorable conditions (humidity and stand density). Abstract The study investigated partitioning of resources between roots and stems in mono-species and mixed-species stands...
Key messageThe present study identified natural infection ofApple stem grooving virusin five bamboo species. Abstract “Himalayan ‘maggar’ bamboo, widely distributed in the Western Himalayas, is abundantly found in and around the campus of CSIR-IHBT. Some of the plants near the apple germplasm and nursery field at this institute displayed virus-like symptoms such as chlorosis, mosaic, yellow streaks,...
Key message Agarwood formation inAquilaria malaccensis could be artificially stimulated by fungal infection. Furthermore, A. malaccensis adapts to this infection by developing typical included phloem boundary within xylem tissues. Abstract Naturally synthesized agarwood requires a lengthy process of up to 30 years, which impedes its continuous production. Therefore, recent effort has been allocated...
Key message The initial photoinhibition observed when Cedrela fissilis was transferred from shade to full sunlight was not severe enough to affect their biomass accumulation. Abstract We investigated the growth and, morphological and physiological changes in Cedrela fissilis, a tropical tree species known for its high-quality wood, when subjected to changes in natural light conditions. We assessed...
Key message This is the first report of (1) somatic embryogenesis in the hybrids ofPinus attenuatawithPinus radiatavar.cedrosensisand (2) use ofPinus radiatasomatic embryogenic tissue as nurse tissue to facilitate initiation from immature hybrid pine zygotic embryos. Abstract Embryogenic cell lines were successfully initiated from first generation reciprocal hybrids of Pinus radiata var. cedrosensis...
Key messageUnderstanding species-specific response as well as wedging and zero xylem growth is vital for tree-ring analysis of tropical understory trees. Abstract Knowledge on intra-annual xylem growth remains understudied in tropical regions, especially for understory species. However, it is important to disentangle seasonal tree response in this complex environment. The aim is to assess intra-annual...
Key message This study provides a novel desiccation indicator for somatic embryos and an efficient system for somatic seedling production inPicea asperataMast. Abstract Picea asperata Mast. is a widely distributed native spruce in China with outstanding wood properties and adaptability. In this study, we established an effective system to propagate plantlets through somatic embryogenesis in P. asperata...
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