Dry matter partitioning and root length/leaf area ratios in herbaceous perennial plants with diverse altitudinal distribution

Oecologia ◽  
1987 ◽  
Vol 74 (3) ◽  
pp. 411-418 ◽  
Author(s):  
Ch. Körner ◽  
U. Renhardt
Keyword(s):  
Leaf Area ◽  
Root Length ◽  
Dry Matter ◽  
Altitudinal Distribution ◽  
Dry Matter Partitioning ◽  
Perennial Plants ◽  
Herbaceous Perennial

scholarly journals Nitrogen for growth of stock plants and production of strawberry runner tips

Bragantia ◽  
2012 ◽  
Vol 71 (3) ◽  
pp. 394-399 ◽  
Author(s):  
Djeimi Isabel Janisch ◽  
Jerônimo Luiz Andriolo ◽  
Vinícius Toso ◽  
Kamila Gabriele Ferreira dos Santos ◽  
Jéssica Maronez de Souza
Keyword(s):  
Leaf Area ◽  
Nutrient Solution ◽  
Dry Matter ◽  
Nitrogen Concentration ◽  
Growth Period ◽  
Dry Matter Partitioning ◽  
Area Index ◽  
Camino Real ◽  
Nitrogen Concentrations ◽  
Crown Roots

The objective of this research was to determine growth and dry matter partitioning among organs of strawberry stock plants under five Nitrogen concentrations in the nutrient solution and its effects on emission and growth of runner tips. The experiment was carried out under greenhouse conditions, from September 2010 to March 2011, in a soilless system with Oso Grande and Camino Real cultivars. Nitrogen concentrations of 5.12, 7.6, 10.12 (control), 12.62 and 15.12 mmol L-1 in the nutrient solution were studied in a 5x2 factorial randomised experimental design. All runner tips bearing at least one expanded leaf (patent requested) were collected weekly and counted during the growth period. The number of leaves, dry matter (DM) of leaves, crown and root, specific leaf area and leaf area index (LAI) was determined at the final harvest. Increasing N concentration in the nutrient solution from 5.12 to 15.12 mmol L-1 reduces growth of crown, roots and LAI of strawberry stock plants but did not affect emission and growth of runner tips. It was concluded that for the commercial production of plug plants the optimal nitrogen concentration in the nutrient solution should be 5.12 mmol L-1.

Growth and yield studies of Lupinus angustifolius and L. albus in Victoria

1982 ◽  
Vol 22 (115) ◽  
pp. 76 ◽  
Author(s):  
KA Boundy ◽  
TG Reeves ◽  
HD Brooke
Keyword(s):  
Grain Yield ◽  
Leaf Area ◽  
Dry Matter ◽  
Yield Component ◽  
Early Flowering ◽  
Growth And Yield ◽  
Dry Matter Production ◽  
Sowing Time ◽  
Dry Matter Partitioning ◽  
Matter Production

The effect of serial planting on dry matter production, leaf area, grain yield and yield components cf Lupinus angustifoiius (cvv. Uniwhite, Uniharvest and Unicrop) and L. albus (cv. Ultra) was investigated in field plots at Rutherglen in 1973 and 1974. Delayed planting reduced dry matter production of all cultivars, and leaf area for Ultra. Differences in dry matter partitioning were observed between the late flowering Uniharvest, and the early flowering Unicrop and Ultra. In Uniharvest, delayed plantings resulted in a greater proportion of total dry matter being produced during the flowering phase, whereas the reverse was true for Unicrop and Ultra. The later flowering cultivars showed marked grain yield and yield component reduction with later sowing. Yields were reduced by 160.6 kg/ha and 222.5 kg/ha for each week's delay in sowing Uniharvest and Uniwhite, respectively. This effect was offset in the early flowering cultivars by greater development of lateral branches. In addition, when Unicrop and Ultra were planted in April, pod and flower abortion on the main stem resulted from low temperatures at flowering time. Optimum sowing time was early April for Uniwhite and Uniharvest, and early May for Unicrop and Ultra. Excellent vegetative growth under ideal moisture conditions highlighted the poor harvest indices of lupins and the scope for genetic improvement in the genus.

Phosphorus Nutrition of Seedlings of the Waratah, Telopea speciosissima (Sm) R.Br. (Proteaceae)

1989 ◽  
Vol 37 (4) ◽  
pp. 313 ◽  
Author(s):  
MJ Grose
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Root Length ◽  
Dry Matter ◽  
Optimal Growth ◽  
Phosphorus Nutrition ◽  
Cluster Roots ◽  
Soil Toxicity ◽  
Low Levels ◽  
Phosphate Addition

Seedling waratahs, Telopea speciosissima (Sm.) R.Br., were grown in acid-washed, phosphate-deficient sand in a glasshouse for 14 weeks under ten phosphate regimes from 0 to 31 mg P/kg soil. Root length increased at the lower levels of applied phosphate, but the dry weights of roots did not, indicating thinner roots at low phosphate levels. Adding phosphate above a level of 0.6 mg P/kg soil increased dry matter in shoots and leaf area. Phosphate concentrations in the youngest fully expanded leaf (YFEL) ranged from 0.06% at deficient levels of applied phosphate to 0.4% at the optimal growth level of 3.1mg P / kg soil. Toxicity symptoms were present at phosphate concentrations in shoots of 4.7%. Cluster roots were found with levels of phosphate addition from 0-7.8 mg P/kg soil, and their numbers increased as phosphate was increased from deficient to low levels, and decreased where applied phosphate was adequate for plant growth.

Herbicide Effects on Ivyleaf Morningglory (Ipomoea hederacea) and Soybean (Glycine max) Growth and Water Relations

Weed Science ◽  
1996 ◽  
Vol 44 (4) ◽  
pp. 836-841 ◽  
Author(s):  
James C. Holloway ◽  
David R. Shaw
Keyword(s):  
Glycine Max ◽  
Leaf Area ◽  
Water Use ◽  
Water Consumption ◽  
Root Length ◽  
Dry Matter ◽  
Ipomoea Hederacea ◽  
Herbicide Treatment ◽  
Soybean Leaf ◽  
Herbicide Effects

Soybean and ivyleaf morningglory were grown alone and together to quantify water use and growth after treatment with soil-applied chlorimuron plus metribuzin, imazaquin, or no herbicide. Soybean water consumption was 22 ml pot−1day−1or more when grown alone or with another soybean, regardless of herbicide treatment. Ivyleaf morningglory grown alone or with another ivyleaf morningglory consumed ≥ 32 ml water pot−1day−1when no herbicide was applied. Treatment with chlorimuron plus metribuzin or imazaquin reduced ivyleaf morningglory water consumption to ≤ 4 ml pot−1day−1. Water use was reduced with either herbicide when soybean and ivyleaf morningglory were grown together, indicating little or no water consumption by ivyleaf morningglory. Ivyleaf morningglory height, root length, leaf area, and dry matter were reduced by imazaquin or chlorimuron plus metribuzin. Soybean leaf area was also reduced by herbicide treatment or the presence of another plant. Soybean biomass was not reduced in any planting combination, except when two soybean were grown together and treated with imazaquin. Nontreated ivyleaf morningglory partitioned more biomass into the shoots than roots. Ivyleaf morningglory responded to herbicide treatment by partitioning more biomass into roots.

Effect of plant population density on dry matter partitioning and yield in a short-duration cultivar of cowpea (Vigna unguiculata) grown in the tropics

1996 ◽  
Vol 127 (1) ◽  
pp. 89-96 ◽  
Author(s):  
P. Q. Craufurd
Keyword(s):  
Population Density ◽  
Leaf Area ◽  
Dry Matter ◽  
Dry Weight ◽  
Incident Radiation ◽  
Plant Population ◽  
Dry Matter Partitioning ◽  
Radiation Interception ◽  
Plant Densities ◽  
Plant Population Density

SUMMARYAn erect, 60-day cultivar of cowpea, IT84S–2246, was grown with adequate soil moisture at two locations in Nigeria in 1990/91, Ibadan (7° N) and Kano (12° N), contrasting in total incident radiation (Q) and at plant population densities of 1·9–7·7 and 5·4–16·3 plants/m2, respectively. Leaf area, radiation interception and dry matter (DM) accumulation and partitioning were measured. Total shoot and seed dry weights were greater at Kano (mean 4·10 and 1·61 t/ha, respectively) than at Ibadan (mean 1·89 and 0·68 t/ha, respectively), and greater athigher plant densities. Relationships between the reciprocal of total shoot (Wt) and seed dry weight (Ws) per plant and plant population density (Np) determined at Kano and Ibadan were linear and parallel; intercepts, however, were significantly different (P < 0·005). The theoretical maximum potential Wt and Ws per unit area (i.e. 1/b) was therefore the same at Kano and at Ibadan, 448 and 170 g/m2, respectively. However, the optimum Np at Kano and Ibadan was markedly different, c. 10 and 40 plants/m2, respectively. These differences in the relations between DM yields and Np at Kano and Ibadan are examined in terms of leaf area, radiation interception and the partitioning coefficient, and the implications for the design of other agronomic investigations in cowpea are discussed.

Root distribution in space and time in Trifolium subterraneum

1985 ◽  
Vol 36 (4) ◽  
pp. 601 ◽  
Author(s):  
CJ Pearson ◽  
BC Jacobs
Keyword(s):  
Leaf Area ◽  
Root Length ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Coarse Sand ◽  
Horizontal Distribution ◽  
Dry Matter Partitioning ◽  
Rooting Zone ◽  
Root Death ◽  
Vertical And Horizontal Distribution

Distribution of length and weight of roots of subterranean clover cultivars Northarn and Nungarin were measured in the field throughout a growing season. Plants were grown at seven populations from 2 to 1510 plants per m2 in coarse sand which had a bulk density of 1.4 g cm-3. Root growth was described by its vertical and horizontal distribution as functions of population and time after emergence. Differences in growth between cultivars were small. Root depth, which reached a maximum (plateau) at about 90 days, did not vary with plant population. Root density (length per volume of soil) increased faster at high population due to a higher density of' roots beneath the mainstream and an attenuation with distance away from the mainstem which did not appear to be affected by population. Root densities were 10 cm cm-3 in the uppermost core (0-10 cm depth) and 1.6 -3.5 cm cm-3 throughout the rooting zone (0-50 cm) at 119 days after emergence. Root death, estimated from dichlorotrianzinyl staining, was negligible. Leaf area per plant declined with population above 16 plants per m2; leaf area per unit root length (in cores beneath the mainstream) declined 90-fold with increase in population. Top weight and burr yield per plant at final harvest also declined with increasing population; burr yield per m2 also fell significantly at the highest population. It is concluded that the amount of root per unit area increases with population and that plants appear to adjust conservatively in some respects (to much lower leaf area per root length) while being unable to sustain dry matter partitioning (reducing burr/top yields) at the highest population studied.

scholarly journals Effects of Seeding Density on Growth Attributes of Broadleaf Mustard in Nursery Bed

2020 ◽  
Vol 8 (1) ◽  
pp. 65-70
Author(s):  
Nisha Niraula ◽  
Anil Timilsina
Keyword(s):  
Leaf Area ◽  
Root Length ◽  
Dry Matter ◽  
Dry Weight ◽  
Seeding Density ◽  
Seedling Height ◽  
Fresh Weight ◽  
Shoot Dry Weight ◽  
Broad Leaf ◽  
Growth Attributes

The productivity of crops is highly affected by the seedling quality, which is governed by seeding density in the nursery. So, an experiment was conducted to explore the effect of seedling spacing in the growth attributes of Broad Leaf Mustard cv. “Marpha Chauda Paate” at IAAS, Lamjung Campus, during Oct 2018. Four spacing treatments viz 0.5 cm × 1 cm, 1 cm × 1 cm, 1.5 cm ×1.5 cm and 2 cm × 2 cm were arranged in RCB Design with 5 replications. Observation of seedling height, leaf area, leaf number, shoot & root fresh weights, shoot dry matter, and dry matter percentage from twenty-three days old seedlings were recorded.  The total leaf area was estimated using the Image-J package. Data were tabulated in MS Excel and analyzed by Gen Stat. Treatments differed significantly in seedling height, shoot and root fresh weight, leaf area, root length, and shoot dry weight, while the number of leaves and dry matter percentage did not differ statistically. Maximum shoot fresh weight (1.09 g), shoot dry weight (0.11 g), leaf area (48.24 cm2), root length (4.89 cm), root fresh weight (0.03 g) per plant and shoot dry matter percentage (9.24%) were found in widest spacing (2 cm × 2 cm). However, seedling height was recorded higher in closer spacing. Therefore, the study of the overall characteristics asserted that the seed spaced at 2 cm × 2 cm produced superior seedling over all other spacings. Int. J. Appl. Sci. Biotechnol. Vol 8(1): 65-70

scholarly journals Growth analysis in chard plants (Beta vulgaris L. Cicla, cv. 'Pencas Blancas') exposed to different light quality

2014 ◽  
Vol 32 (2) ◽  
pp. 205-212 ◽  
Author(s):  
Fánor Casierra-Posada ◽  
Esteban Zapata-Casierra ◽  
Daniel A. Chaparro-Chaparro
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Dry Matter ◽  
Light Quality ◽  
Dry Weight ◽  
Dry Mass ◽  
Dry Matter Partitioning ◽  
Absolute Growth ◽  
Net Assimilation ◽  
Total Dry Weight

To determine the effects of light quality on the growth indices of plants, Pencas Blancas cultivar chard plantlets were grown for 2 months under five different light treatments, obtained by filtering sunlight through colored polyethylene films. The treatments included: red, blue, green, yellow and transparent cover colors. A transparent cover (white light) was used as the control. The colored covers affected the plant growth. The plants grown under the yellow cover presented a better behavior with regards to growth, taken as: total dry weight per plant, leaf area, specific leaf area, absolute growth rate, relative growth rate, harvestable dry matter and root to shoot ratio. The dry matter partitioning in the leaves and roots was affected by the light quality, but not in the petioles, with a higher accumulation of dry mass in the leaves of plants grown under the yellow cover. As a consequence of the enhanced leaf area in the plants under the yellow cover, they also had the highest water uptake. On the other hand, the highest net assimilation rate value was found in plants grown under the transparent cover. These results open up the possibility of using yellow colored cover in leafy green vegetables, especially in chard plants grown under controlled conditions.

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