Results 11 to 20 of about 3,325,282 (294)

Functional analysis of secondary tropical dry forests in a region of the Colombia, Caribbean [PDF]

open access: yes, 2013
Secondary tropical forests are increasingly recognized for their role conserving biodiversity in agricultural landscapes and this role is especially important for seasonally dry tropical forests (SDTF), one of the most threatened tropical forested ...
Castellanos Castro, C
core   +9 more sources

Growth and dry matter partition wheat plants in response to seed vigor and water restriction

open access: yesJournal of Seed Science, 2021
: The quality of the seeds and the occurrence of stresses are decisive for the development of the crops. Thus, the work aimed to verify the effect of seed vigor on growth and dry weight partition of wheat plants subjected to water stress.
Felipe Koch   +5 more
doaj   +1 more source

Genetics of Promiscuous Nodulation in Soybean: Nodule Dry Weight and Leaf Color Score [PDF]

open access: yesJournal of Heredity, 2004
The symbiotic relationship between the soybean plant and rhizobium results in fixation of atmospheric nitrogen (N(2)) in the root nodules, with the result that nitrogenous fertilization of the soybean is unnecessary. The effectiveness of nodule formation and N(2) fixation with rhizobial strains is under genetic control with two general categories ...
E T, Gwata   +3 more
openaire   +2 more sources

Allometric relationship between some morpho-physiological characteristics of corn under different tillage systems and sowing dates [PDF]

open access: yesIran Agricultural Research, 2018
Field experiments were conducted to determine the relationship between plant leaf area as the dependent variable with leaves number, leaf dry weight, and total vegetative components dry weight and plant height as the independent variables.
S. Zaremohazabieh   +3 more
doaj   +1 more source

Dry weight increase of leaf disks as a measure of photosynthesis

open access: yesBiologia Plantarum, 1960
Isolated leaf disks are illuminated under constant conditions in a specially arranged chamber and their increase in dry weight within a certain time is taken as a measure of photosynthetic intensity. The weight increment is estimated by comparing the dry weight of the illuminated disks with that of control disks sampled in the close vicinity of the ...
Jiří Bartoš   +2 more
openaire   +1 more source

Seasonal variation in soil and plant water potentials in a Bolivian tropical moist and dry forest [PDF]

open access: yes, 2010
We determined seasonal variation in soil matric potentials (¿soil) along a topographical gradient and with soil depth in a Bolivian tropical dry (1160 mm y-1 rain) and moist forest (1580 mm y-1).
Markesteijn, L.   +3 more
core   +1 more source

Comparison of Salinity Tolerance of Common and Improved Genotypes of Forage Sorghum (Sorghum bicolor L.) in Tabriz-plain [PDF]

open access: yesJournal of Agricultural Science and Sustainable Production, 2020
In order to evaluate salinity tolerance in some sorghum genotypes, a split-plot experiment based on randomized complete block design with three replications was conducted at the Research Farm of East-Azarbaijan Agricultural and Natural Resources Research
Hassan Monirifar   +4 more
doaj  

The Impact of Seeding Rate and Locations on Some Grass Pea (Lathyrus sativus) Lines for Growth, Forage and Seed Yield in Sulaimani Region

open access: yesTikrit Journal for Agricultural Sciences, 2022
This study was carried out at two locations in Sulaimani governorate, Qlyasan and Kanipanka, during the winter season of 2017-2018 to evaluate the response of four lines of Grass pea Lathyrus sativus (IF 003, IF 133, IF 102, IF 067) lines and four ...
Avan Abdullah, Jwan Rafaat
doaj   +1 more source

Genome-Wide Association Mapping of Hulless Barely Phenotypes in Drought Environment

open access: yesFrontiers in Plant Science, 2022
Drought stress is one of the main factors restricting hulless barley (Hordeum vulgare L. var. nudum Hook. f.) yield. Genome-wide association study was performed using 269 lines of hulless barley to identify single-nucleotide polymorphism (SNP) markers ...
Jie Li   +17 more
doaj   +1 more source

Environmental changes during secondary succession in a tropical dry forest in Mexico [PDF]

open access: yes, 2011
Vegetation and environment change mutually during secondary succession, yet the idiosyncrasies of the vegetation effect on the understorey environment are poorly understood. To test whether the successional understorey environment changes predictably and
Lebrija Trejos, E.E.   +4 more
core   +1 more source

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