Improved plant yield efficiency alleviates the erratic optimum density in maize

2020 ◽  
Vol 112 (3) ◽  
pp. 1690-1701
Author(s):  
Ioannis Mylonas ◽  
Evaggelia Sinapidou ◽  
Emmanouel Remountakis ◽  
Iosif Sistanis ◽  
Chrysanthi Pankou ◽  
...  
Keyword(s):  
Plant Yield ◽  
Yield Efficiency ◽  
Optimum Density

scholarly journals Plant Yield Efficiency by Homeostasis as Selection Tool at Ultra-Low Density. A Comparative Study with Common Stability Measures in Maize

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1203
Author(s):  
Evaggelia Sinapidou ◽  
Chrysanthi Pankou ◽  
Fotakis Gekas ◽  
Iosif Sistanis ◽  
Constantinos Tzantarmas ◽  
...  
Keyword(s):  
Plant Density ◽  
Phenotypic Expression ◽  
Yield Potential ◽  
Low Density ◽  
Potential Yield ◽  
Plant Yield ◽  
Yield Efficiency ◽  
Parametric Statistics ◽  
Resource Deficit ◽  
Field Experimentation

The study pertains to field experimentation testing seven maize (Zea mays L.) hybrids at four densities, across five locations under normal (NIR) and low-input (LIR) regimes. The main objective was to assess the prognostic value of plant yield efficiency by homeostasis (PYEH) for breeding purposes at ultra-low plant density to predict hybrid yield potential and stability. PYEH comprises plant yield efficiency (PYE) that reflects the ability of individual plants to exploit resources, and plant yield homeostasis (PYH) that indicates the crop’s ability to evade acquired plant-to-plant variability. The same hybrids were also evaluated for stability by commonly used parametric and non-parametric statistics based on data at low (LCD) and high crop densities (HCD). Hybrid stability focused on potential yield loss due to erratic optimum density (OD). Most methods produced conflicting results regarding hybrid ranking for yield and stability especially at LCD. In contrast, PYEH consistently highlighted high-yielding and stable hybrids, potentially able to reach the attainable crop yield (ACY) inter-seasonally irrespective of crop spacing. Low density is common practice under resource-deficit conditions, so crop adaptation to crop spacing is a viable option to overcome erratic OD that constitutes a root source of crop instability in rainfed maize. The results were further supportive of breeding at ultra-low density to facilitate the identification and selection of superior genotypes, since such conditions promote phenotypic expression and differentiation, and ensure repeatability across diverse environments.

Improved Plant Yield Efficiency is Essential for Maize Rainfed Production

2015 ◽  
Vol 107 (3) ◽  
pp. 1011-1018 ◽  
Author(s):  
Ioannis S. Tokatlidis ◽  
Christos Dordas ◽  
Fokion Papathanasiou ◽  
Ioannis Papadopoulos ◽  
Chrysanthi Pankou ◽  
...  
Keyword(s):  
Plant Yield ◽  
Yield Efficiency

Effect of plant density and vegetative branch retention on within-plant yield distribution and maturity performance of cotton

2010 ◽  
Vol 18 (4) ◽  
pp. 792-798 ◽  
Author(s):  
He-Zhong DONG ◽  
Zhen-Huai LI ◽  
Zhen LUO ◽  
He-Quan LU ◽  
Wei TANG ◽  
...  
Keyword(s):  
Plant Density ◽  
Plant Yield ◽  
Yield Distribution

Leaf magnesium concentration efficiency versus yield efficiency of corn hybrids

1981 ◽  
Vol 12 (4) ◽  
pp. 345-354 ◽  
Author(s):  
Raymond N. Gallaher ◽  
M.D. Jellum ◽  
J.B. Jones
Keyword(s):  
Magnesium Concentration ◽  
Corn Hybrids ◽  
Yield Efficiency

Increased illumination levels enhance biosynthesis of aloenin A and aloin B in Aloe arborescens Mill., but lower their per-plant yield

2021 ◽  
Vol 164 ◽  
pp. 113379
Author(s):  
Silvia Lazzara ◽  
Alessandra Carrubba ◽  
Edoardo Napoli ◽  
Alessandra Culmone ◽  
Anna Concetta Cangemi ◽  
...  
Keyword(s):  
Plant Yield ◽  
Aloe Arborescens

scholarly journals Yield and Fruit Quality of Strawberry Cultivars under Different Irrigation Regimes

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 261
Author(s):  
María Teresa Ariza ◽  
Luis Miranda ◽  
José Antonio Gómez-Mora ◽  
Juan Jesús Medina ◽  
David Lozano ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Environmental Sustainability ◽  
Water Productivity ◽  
Production Cycle ◽  
High Productivity ◽  
Yield Efficiency ◽  
Significant Yield ◽  
Water Treatments ◽  
Strawberry Cultivars

Strawberry (Fragaria×ananassa Duch.) production requires the input of large amounts of water provided by irrigation during the entire production cycle. However, water availability is shrinking in many important strawberry cropping areas, such as Huelva (in Europe), compromising the environmental sustainability and economic viability of strawberry production. Besides technical approaches, water-saving strategies are necessary for improving strawberry water productivity such as the use of low water-consumptive cultivars with high productivity or cultivars allowing deficit irrigation (DI) strategies. A two-year field experiment was conducted to compare the physiological and agronomical response of six commercial strawberry cultivars (‘Sabrina’, ‘Fortuna’, ‘Splendor’, ‘Primoris’, ‘Rabida’ and ‘Rociera’) to six different water treatments ranging from 65% to 140% of estimated ‘Sabrina’ evapotranspiration (ETcSab; ~224–510 mm year−1). Cultivars differed substantially in yield and water consumption linked to their biomass partitioning into reproductive/ vegetative organs, determining different yield efficiency (YE). Their water needs (IN) conditioned their response to different water supplies, involving significant yield losses in DI treatments (<20% IN) but not decreasing fruit quality. The highly-consumptive and productive ‘Rabida’ and ‘Rociera’, reduced yields by DI (<40%) but were still profitable; the low-water-consumptive but still productive ‘Fortuna’, ‘Splendor’ and ‘Primoris’ represent significant water-savings (<20%) in strawberry cultivation.

scholarly journals Protists as main indicators and determinants of plant performance

Microbiome ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Sai Guo ◽  
Wu Xiong ◽  
Xinnan Hang ◽  
Zhilei Gao ◽  
Zixuan Jiao ◽  
...  
Keyword(s):  
Plant Growth ◽  
Organic Fertilizer ◽  
Agricultural Practices ◽  
Plant Performance ◽  
Organic Fertilization ◽  
Plant Yield ◽  
Growing Seasons ◽  
Beneficial Microorganisms ◽  
Plant Growth Promoting ◽  
Plant Growth Promoting Microbes

Abstract Background Microbiomes play vital roles in plant health and performance, and the development of plant beneficial microbiomes can be steered by organic fertilizer inputs. Especially well-studied are fertilizer-induced changes on bacteria and fungi and how changes in these groups alter plant performance. However, impacts on protist communities, including their trophic interactions within the microbiome and consequences on plant performance remain largely unknown. Here, we tracked the entire microbiome, including bacteria, fungi, and protists, over six growing seasons of cucumber under different fertilization regimes (conventional, organic, and Trichoderma bio-organic fertilization) and linked microbial data to plant yield to identify plant growth-promoting microbes. Results Yields were higher in the (bio-)organic fertilization treatments. Soil abiotic conditions were altered by the fertilization regime, with the prominent effects coming from the (bio-)organic fertilization treatments. Those treatments also led to the pronounced shifts in protistan communities, especially microbivorous cercozoan protists. We found positive correlations of these protists with plant yield and the density of potentially plant-beneficial microorganisms. We further explored the mechanistic ramifications of these relationships via greenhouse experiments, showing that cercozoan protists can positively impact plant growth, potentially via interactions with plant-beneficial microorganisms including Trichoderma, the biological agent delivered by the bio-fertilizer. Conclusions We show that protists may play central roles in stimulating plant performance through microbiome interactions. Future agricultural practices might aim to specifically enhance plant beneficial protists or apply those protists as novel, sustainable biofertilizers.

HERITABILITY OF SINGLE PLANT YIELD AND INCIDENCE OF BLACK POD DISEASE IN COCOA

2007 ◽  
Vol 43 (4) ◽  
pp. 455-462 ◽  
Author(s):  
G. LOCKWOOD ◽  
F. OWUSU-ANSAH ◽  
Y. ADU-AMPOMAH
Keyword(s):  
Large Scale ◽  
Mass Selection ◽  
Single Plant ◽  
Plant Yield ◽  
Clone Selection ◽  
Level Data ◽  
Family Level ◽  
Black Pod ◽  
Black Pod Disease

Broad sense heritabilities were estimated in three long-term cocoa clone trials in Ghana, with 20, 18 and 15 entries. They were 0.15, 0.05 and 0.15 for yield in pods per plant, and 0.26, 0.19 and 0.40 for incidence of ‘bad’ pods, mostly due to black pod disease, caused by infection with Phytophthora spp. The low heritability of single plant yield, which has been known for 80 years, has been widely overlooked in cocoa research and extension, compromising the success of clone selection programmes. The heritability of the incidence of black pod disease is high enough to justify mass selection where family level data are not available. The findings will be applied in a new large-scale programme in Ghana to select clones that are high yielding in the presence of P. megakarya.

scholarly journals Asparagus: value of individual plant yield and fern characteristics as selection criteria

1986 ◽  
Vol 14 (4) ◽  
pp. 417-420 ◽  
Author(s):  
P.G. Falloon ◽  
A.S. Nikoloff
Keyword(s):  
Selection Criteria ◽  
Individual Plant ◽  
Plant Yield

Characterization of barley silage – maturity relationships for Central Alberta

1992 ◽  
Vol 72 (4) ◽  
pp. 1009-1020 ◽  
Author(s):  
V. S. Baron ◽  
A. C. Dick ◽  
M. S. Wolynetz
Keyword(s):  
Harvest Index ◽  
Climatic Conditions ◽  
Forage Yield ◽  
Simple Relationship ◽  
Grain Production ◽  
Hordeum Vulgare L ◽  
Standard Type ◽  
Plant Yield ◽  
Whole Plant

Production of high-quality whole-plant barley (Hordeum vulgare L.) silage requires an understanding of the relationships among whole-plant percent dry matter (WPDM), whole-plant yield parameters reflecting both whole plant and kernel maturity, grain-to-straw ratio (harvest index) and in vitro digestible organic matter (IVDOM) over the grain-filling period. Eight six-row, standard-type barley cultivars, representative of the range of maturity and stature of cultivars recommended for grain production in Alberta, were grown at Lacombe, Alberta during 1983 and 1984. Seven weekly whole-plant harvests were carried out on each cultivar beginning at heading. Fresh and dry weights on whole-plant and kernel fractions at each harvest allowed calculation of the essential parameters. Regression analyses were used to determine whether several production-related response variables could be predicted from variables such as WPDM, days after heading and cumulative growing degree days (DD) greater than 5 °C after heading. All cultivars exhibited similar trends with DD after heading for these relationships over two years of very different climatic conditions. IVDOM did not vary (P > 0.05) during the growing seasons indicating that IVDOM content cannot be a criterion for determining harvest date. Other relationships indicated that if whole-plant harvest occurred at 30% WPDM it would precede the time of maximum whole-plant yield and grain maturity by 160 and 208 DD, respectively, resulting in a loss in potential whole-plant yield of about 17%. Cultivars which produce more herbage but are too late maturing for grain production could be used to offset this yield loss and there may be a place in barley breeding programs for late-maturing, tall, strong-strawed cultivars specifically for silage production. For havest index, a large difference (8%) between years indicated that a simple relationship between harvest index and DD was not adequate to routinely predict grain content in barley silage.Key words: Silage, whole-plant maturity, barley, forage, yield

Sign in / Sign up

Export Citation Format

Share Document