Variations with slope in stem and leaf traits of Melica przewalskyi in alpine grassland

2014 ◽  
Vol 38 (12) ◽  
pp. 1307-1314
Author(s):  
DANG Jing-Jing ◽  
◽  
ZHAO Cheng-Zhang ◽  
LI Yu ◽  
HOU Zhao-Jiang ◽  
...  
Keyword(s):  
Leaf Traits ◽  
Alpine Grassland

Relationship between leaf traits of Melica przewalskyi and slope aspects in alpine grassland of Qilian Mountains, China

2015 ◽  
Vol 39 (1) ◽  
pp. 23-31
Author(s):  
DANG Jing-Jing ◽  
◽  
ZHAO Cheng-Zhang ◽  
LI Yu ◽  
HOU Zhao-Jiang ◽  
...  
Keyword(s):  
Leaf Traits ◽  
Qilian Mountains ◽  
Alpine Grassland

Evaluation of Agronomic Traits of Sponge Gourd (Luffa cylindrica) Inbred Lines Under Plastic House in Thua Thien Hue

2017 ◽  
Vol 126 (3E) ◽  
Author(s):  
Trương Thị Hồng Hải ◽  
Nguyễn Thị Diệu Thể ◽  
Phan Thu Thảo
Keyword(s):  
Skin Color ◽  
Agronomic Traits ◽  
Block Design ◽  
Leaf Traits ◽  
Pure Line ◽  
Inbred Lines ◽  
Fruit Shape ◽  
Yield Potential ◽  
High Yield ◽  
Sponge Gourd

In order to establish the pure line of sponge gourd containing aroma feature, we selected the desirable inbred lines by using a self-pollinating method. The present study was investigated to estimate the morphological traits and fruit quality of 6 sponge gourd inbred lines which generated at 4th generation of an aroma Luffa accession B29 under plastic house conditions. The experiment was conducted in a randomized complete block design (RCBD) with three replications, from May to November in 2016. Five plants per replication were examined. The results indicated that all inbred lines could grow well under plastic house conditions. The inbred lines had the same stem and leaf traits; whereas fruit shape, skin color and fruit veins color were observed differently among inbred lines. The aromatic trait was retained in all inbred lines either before or after cooking. The high yield was found in lines BC1 and BC2 by 10.1 tons/ha and 10.7 tons/ha, respectively. These inbred lines should be examined in open field condition to confirm the presence of aromatic trait and yield potential before completion of the procedures for recognition of new Luffa varieties.  

scholarly journals Influence of dry season onQuercus suberL. leaf traits in the Iberian Peninsula

2019 ◽  
Vol 106 (5) ◽  
pp. 656-666 ◽  
Author(s):  
Kyra A. Prats ◽  
Craig R. Brodersen ◽  
Mark S. Ashton
Keyword(s):  
Iberian Peninsula ◽  
Leaf Traits ◽  
Dry Season

Legacy effect of warming on the heterotrophic respiration of alpine grassland on the Qinghai-Tibet Plateau

2021 ◽  
Vol 166 ◽  
pp. 104093
Author(s):  
Fei Peng ◽  
Wenjuan Zhang ◽  
Chimin Lai ◽  
Chengyang Li ◽  
Quangang You ◽  
...  
Keyword(s):  
Heterotrophic Respiration ◽  
Alpine Grassland ◽  
Tibet Plateau ◽  
Legacy Effect ◽  
Qinghai Tibet Plateau

scholarly journals Propagation of Pistacia lentiscus var. Chia Genotypes and Determination of Their Ornamental Traits Combined with a Genetic Analysis Using ISSR Markers

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 205
Author(s):  
Stefanos Kostas ◽  
Stefanos Hatzilazarou ◽  
Elias Pipinis ◽  
Anastasios Vasileiadis ◽  
Panagiotis Magklaras ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Germination Rate ◽  
Leaf Traits ◽  
Issr Markers ◽  
Pistacia Lentiscus ◽  
Natural Habitats ◽  
Indolebutyric Acid ◽  
Single Male ◽  
Asexual Propagation

Pistacia lentiscus L. is a dioecious shrub or small tree with high drought resistance, native in the entire Mediterranean basin. The variety ‘Chia’ (mastic tree) is cultivated for the production of mastic gum (a resin produced after wounding of the trunks and thick branches) in the Island of Chios (Greece), but it also has a significant ornamental value. In the present study, ten male and ten female genotypes of P. lentiscus var. Chia from the natural habitats of Chios were selected and examined with respect to the rooting efficiency of their shoot cuttings. The germination ability of the seeds was also tested. The 20 plants were morphologically described, mainly with respect to traits related to their ornamental value. Furthermore, leaves were collected from the 20 genotypes, from which genomic DNA (gDNA) was isolated, followed by amplification of gDNA fragments using the polymerase chain reaction (PCR) and inter simple sequence repeat (ISSR) primers. This was done aiming both at the determination of their genetic distance and the establishment of possible correlations between the amplified bands and certain morphological traits. The results of the study showed that there were differences among the genotypes for both methods of propagation. Regarding the rooting of the shoot cuttings, the best genotype was 8M (cv. ‘Psilophyllos’), achieving a rooting rate of 62.5% in winter with the application of indolebutyric acid (potassium salt of IBA), while regarding the seed germination capacity the genotype 2F exhibited the highest germination rate (57%). Genetic analysis using ISSRs separated the plants into four groups, one group consisting of male genotypes, one of the female genotypes, one consisting of members from both genders and a fourth containing a single male genotype. The genetic analysis of the male genotypes only produced a dendrogram showing the cultivars clustering in three different groups. Regardless of the genetic analysis, it seems that there were correlations between the ISSR markers and the leaf traits and also the gender and the asexual propagation. These correlations can assist future breeding programs of P. lentiscus var. Chia.

scholarly journals Tree diversity and functional leaf traits drive herbivore‐associated microbiomes in subtropical China

2021 ◽  
Author(s):  
Yi Li ◽  
Douglas Chesters ◽  
Ming‐Qiang Wang ◽  
Tesfaye Wubet ◽  
Andreas Schuldt ◽  
...  
Keyword(s):  
Leaf Traits ◽  
Tree Diversity ◽  
Subtropical China

scholarly journals Relationships Among the Feeding Behaviors of a Mirid Bug on Cotton Leaves of Different Ages and Plant Biochemical Substances

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Haiyan Song ◽  
Zhaoke Dong ◽  
Lili Li ◽  
Zengbin Lu ◽  
Chao Li ◽  
...  
Keyword(s):  
Negative Impact ◽  
Leaf Age ◽  
Leaf Traits ◽  
Cotton Leaf ◽  
Young Plant ◽  
Feeding Behaviors ◽  
Probing Behavior ◽  
Negative Effect ◽  
Mirid Bug ◽  
The Relationship

Abstract Apolygus lucorum (Meyer-Dür) (Hemiptera: Miridae) tends to feed on young plant tissues. To explore the relationship between stylet probing behaviors of adult A. lucorum and conditions of cotton leaves, we conducted an experiment using electropenetrography (EPG). Behaviors were recorded on four cotton varieties, in relation to thickness and biochemical traits of differently-aged leaves. Cotton leaf age had a significant effect on the probing behavior of A. lucorum but cotton variety did not. One-day-old leaves of A. lucorum received the highest mean number of stylet probes (penetrations) per insect, and longest mean durations per insect of combined stylet probing or its components, cell rupture and ingestion behaviors. All of the leaf traits (thickness and biochemical substances) were similar among these four cotton varieties. Leaf thickness had a significantly negative effect on the same four variables above. Gossypol and tannin also had a negative impact on combined probing duration. Redundancy analysis showed that the four EPG variables were closely related to nutrient substances (amino acids, sugar, and water) while they had the opposite relationship with plant defense substances (gossypol and tannin). On cotton in the seedling stages, A. lucorum fed more readily on the youngest, thinnest leaves in our no-choice EPG experiments. Nutrients and chemical resistance substances determined the probing duration of A. lucorum. Our findings can contribute to better understanding of patterns of feeding and host consumption by A. lucorum, ultimately improving cotton resistance to A. lucorum.

scholarly journals Morphological and physiological plasticity response to low nitrogen stress in black cottonwood (Populus deltoides Marsh.)

2021 ◽  
Author(s):  
Cun Chen ◽  
Yanguang Chu ◽  
Qinjun Huang ◽  
Changjun Ding ◽  
Weixi Zhang ◽  
...  
Keyword(s):  
Negative Correlation ◽  
Nitrogen Use Efficiency ◽  
Root Biomass ◽  
Populus Deltoides ◽  
Leaf Traits ◽  
Nitrogen Level ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Normal Nitrogen ◽  
Low Nitrogen

AbstractIt is important to evaluate nitrogen use efficiency and nitrogen tolerance of trees in order to improve their productivity. In this study, both were evaluated for 338 Populus deltoides genotypes from six provenances. The plants were cultured under normal nitrogen (750 μM NH4NO3) and low nitrogen (5 μM NH4NO3) conditions for 3 months. Growth, chlorophyll content and glutamine synthetase activity of each genotype were measured. Under low nitrogen, heights, ground diameter, leaf area, leaf and root biomass, and chlorophyll contents were significantly lower than those under normal nitrogen level. Correlation analysis showed that nutrient distribution changed under different nitrogen treatments. There was a negative correlation between leaf traits and root biomass under normal nitrogen level, however, the correlation became positive in low nitrogen treatment. Moreover, with the decrease of nitrogen level, the negative correlation between leaf morphology and chlorophyll levels became weakened. The growth of the genotypes under the two treatments was evaluated by combining principal component analysis with a fuzzy mathematical membership function; the results showed that leaf traits accounted for a large proportion of the variation in the evaluation model. According to the results of comprehensive evaluation of plants under the two treatments, the 338 P. deltoides genotypes could be divided into nine categories, with wide genotypic diversity in nitrogen use efficiency and low nitrogen tolerance. As a result, 26 N-efficient genotypes and 24 N-inefficient genotypes were selected. By comparative analysis of their morphological and physiological traits under the two treatments, leaf traits could be significant indicators for nitrogen use efficiency and nitrogen tolerance, which is of considerable significance for breeding poplar varieties with high nitrogen use efficiencies.

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