Genetic control of vegetative growth index in oats (Avena spp.)

1983 ◽  
Vol 65 (3) ◽  
pp. 219-223 ◽  
Author(s):  
D. B. Helsel ◽  
K. J. Frey
Keyword(s):  
Genetic Control ◽  
Vegetative Growth ◽  
Growth Index ◽  
Vegetative Growth Index

scholarly journals Competitive Capacity of Native Species From the Carajás National Forest, Brazil

2018 ◽  
Vol 10 (11) ◽  
pp. 471
Author(s):  
Rafael G. Viana ◽  
Kaléo D. Pereira ◽  
Alexandre F. Castilho ◽  
Yanna K. S. Costa ◽  
Cintia H. Marega ◽  
...  
Keyword(s):  
Vegetative Growth ◽  
Native Species ◽  
Growth Index ◽  
National Forest ◽  
Density Index ◽  
Infestation Density ◽  
Physiological Quality ◽  
Urochloa Brizantha ◽  
Exotic Grass ◽  
Vegetative Growth Index

The present research had the objective to use the factor analysis in the evaluation of the competitive capacity of three native species from the Carajás National Forest in competition with different plant densities of the Urochloa brizantha grass. The experiment was conducted in a greenhouse and consisted in planting pots with the native species Bauhinia longipedicellata, Mimosa acutistipula and Solanum crinitum in competition with the exotic grass Urochloa brizantha. The exotic grass was established at densities ranging from 1 to 5 plants per pot, composing a 3 × 5 factorial arrangement with four replications that were delineated completely at random. Data were submitted to factor analysis for further analysis of variance and Tukey’s test at a 0.05 level of significance with the extracted factors. The effects of U. brizantha densities were evaluated by regression analysis. Out of the four extracted factors, three could be interpreted and were defined as vegetative growth index, infestation density index and physiological quality index. The Solanum crinitum species was slightly greater than the others in terms of vegetative growth rate and physiological quality. Generally speaking, native species maintain their vegetative growth in competitive conditions with up to two Urochloa brizantha plants; above that, the vegetative growth index tends to zero, while the infestation density index becomes positive.

scholarly journals Inheritance of Vegetative Growth Index and Related Traits in Pearl Millet

Crop Science ◽  
1995 ◽  
Vol 35 (2) ◽  
pp. 394 ◽  
Author(s):  
P. J. Lynch ◽  
E. W. Rattunde ◽  
K. J. Frey
Keyword(s):  
Pearl Millet ◽  
Vegetative Growth ◽  
Growth Index ◽  
Vegetative Growth Index

Improving cultivated oats (A vena sativa L.) with alleles for vegetative growth index from A. sterilis L.

1984 ◽  
Vol 68 (3) ◽  
pp. 239-245 ◽  
Author(s):  
D. J. Cox ◽  
K. J. Frey
Keyword(s):  
Vegetative Growth ◽  
Growth Index ◽  
Vegetative Growth Index

scholarly journals Vegetative growth of grasslands based on hyper-temporal NDVI data from the Modis sensor

2016 ◽  
Vol 51 (7) ◽  
pp. 858-868
Author(s):  
Marcos Cicarini Hott ◽  
Luis Marcelo Tavares de Carvalho ◽  
Mauro Antonio Homem Antunes ◽  
Polyanne Aguiar dos Santos ◽  
Tássia Borges Arantes ◽  
...  
Keyword(s):  
Vegetative Growth ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
High Growth ◽  
Growth Index ◽  
Data Series ◽  
Moderate Resolution ◽  
Resolution Imaging ◽  
Moderate Resolution Imaging Spectroradiometer ◽  
Very High

Abstract: The objective of this work was to analyze the development of grasslands in Zona da Mata, in the state of Minas Gerais, Brazil, between 2000 and 2013, using a parameter based on the growth index of the normalized difference vegetation index (NDVI) from the moderate resolution imaging spectroradiometer (Modis) data series. Based on temporal NDVI profiles, which were used as indicators of edaphoclimatic conditions, the growth index (GI) was estimated for 16-day periods throughout the spring season of 2012 to early 2013, being compared with the average GI from 2000 to 2011, used as the reference period. Currently, the grassland areas in Zona da Mata occupy approximately 1.2 million hectares. According to the used methods, 177,322 ha (14.61%) of these grassland areas have very low vegetative growth; 577,698 ha (45.96%) have low growth; 433,475 ha (35.72%) have balanced growth; 39,980 ha (3.29%) have high growth; and 5,032 ha (0.41%) have very high vegetative growth. The grasslands had predominantly low vegetative growth during the studied period, and the NDVI/Modis series is a useful source of data for regional assessments.

scholarly journals Effects of Fertilization Ratios and Frequencies on the Growth and Nutrient Uptake of Magnolia wufengensis (Magnoliaceae)

Forests ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 65
Author(s):  
Shixin Deng ◽  
Kankan Shi ◽  
Jiang Ma ◽  
Lili Zhang ◽  
Luyi Ma ◽  
...  
Keyword(s):  
Nutrient Uptake ◽  
Chlorophyll Content ◽  
Vegetative Growth ◽  
Plant Biomass ◽  
Orthogonal Design ◽  
Growth Index ◽  
Nutrient Content ◽  
Leaf Biomass ◽  
Transport Efficiency ◽  
Magnolia Wufengensis

Through this study, the most suitable fertilization ratio, amount and frequency were determined, providing a scientific reference for further fertilization management for Magnolia wufengensis (Magnoliaceae) seedlings. Fertilization is an important cultivation and management measure to maintain forest seedling health and rapid growth. However, improper fertilization can also have unexpected effects: inhibiting seedling growth, increasing the cost of production and contaminating the environment. Thus, to explore the most suitable fertilization treatment for Magnolia wufengensis growth, one-year-old Magnolia wufengensis seedlings and the orthogonal design method were used in this study. Three different fertilization frequencies were used combined with 9 NPK ratios. The growth index, chlorophyll content, nutrient content in tissues, nutrient transport efficiency, nutrient uptake, and soil properties were analyzed. Fertilization can increase chlorophyll content, promoting the vegetative growth and biomass accumulation of Magnolia wufengensis. Fertilization reduced the proportion of root biomass to whole plant biomass, resulting in an increase in stem biomass with little effect on leaf biomass. Additionally, fertilization also increased the proportion of N in roots, P in stems and K in leaves. Under fertilization, the K transport efficiency was higher than that of N and P. Furthermore, there was a positive correlation between the nutrient use efficiencies of N and K. Overall, the effects of six fertilizer applications were much better than those of four and eight fertilizer applications on the promotion of vegetative growth, biomass and nutrient accumulation, nutrient uptake and transport efficiency. The results showed that six fertilizer applications with an NPK ratio of 3:2:1 as follows: N application at 480 mg/plant, P application at 320 mg/plant, and K application at 160 mg/plant was the most suitable fertilization method for plant growth.

scholarly journals (344) Effects of Ozone-treated Irrigation Water on Vegetative Growth of Chrysanthemum

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1059E-1060
Author(s):  
Garry V. McDonald ◽  
Michael A. Arnold ◽  
Bruce J. Lesikar ◽  
Larry W. Barnes ◽  
Don C. Wilkerson
Keyword(s):  
Flow Rate ◽  
Irrigation Water ◽  
Vegetative Growth ◽  
Growth Index ◽  
Water Soluble ◽  
Ozone Exposure ◽  
Nutritional Deficiencies ◽  
Exposure Level ◽  
Soluble Fertilizer ◽  
Morphological Differences

An experiment was initiated in June and Aug. 2004 to determine affects of ozonated fertilizer–injected water on plant growth of chrysanthemum (Chrysanthemum× morifoliumT. de Romatuelle `Covington'). Aliquots (20 L) of reverse osmosis water were amended with 0, 50, and 300 mg·L-1 N (21N–3.1P–5.8K) water-soluble fertilizer and exposed to ozone (O3) gas for 0, 30, 60, or 120 s at a flow rate of 300 mL/min. Containers were sealed and allowed to set for 15 min for O3 diffusion. Treated water was used to irrigate plants. Plants were in 10.2-cm pots and grown until floral initiation. Plants were harvested on 12 Aug. 2004 or 24 Nov. 2004. Growth index (height x canopy width × canopy width in a perpendicular direction/3), and shoot and root dry masses were determined. Interactions between fertility concentration and ozone exposure rates were nonsignificant (P≤ 0.05). Significant main effect differences occurred in growth index and shoot/root dry masses in response to fertilizer concentrations, but growth measures were not affected by ozone exposure. Peak ozone concentrations in fertilizer-injected irrigation water averaged 0.21 mg·L-1 O3 (120 s exposure at 300 mL·L-1) after 15 min diffusion time. At 20 min diffusion times, ozone levels dropped to 0 mg·L-1. No gross morphological differences or obvious necrosis typical of ozone damage on chrysanthemum occurred at any O3 exposure level. No observable nutritional deficiencies were noted. Vegetative growth of chrysanthemum was not directly injured by irrigation water that was exposed to ozone gas for 0 to 120 s at a 300 mL/min flow rate.

Effects of estrone and 17beta-estradiol on vegetative growth of Medicago sativa

1992 ◽  
Vol 84 (2) ◽  
pp. 217-222 ◽  
Author(s):  
Laurence S. Shore ◽  
Yoram Kapulnik ◽  
Bruria Ben-Dor ◽  
Yechezkial Fridman ◽  
Smadar Wininger ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Vegetative Growth

Heat wave effects on biomass and vegetative growth of macrophytes after long-term adaptation to different temperatures: a mesocosm study

2015 ◽  
Vol 66 (3) ◽  
pp. 265-274 ◽  
Author(s):  
Y Cao ◽  
ÉM Neif ◽  
W Li ◽  
J Coppens ◽  
N Filiz ◽  
...  
Keyword(s):  
Heat Wave ◽  
Vegetative Growth ◽  
Wave Effects ◽  
Different Temperatures
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