scholarly journals The SEEDLING BIOMASS 1 allele from indica rice enhances yield performance under low‐nitrogen environments

2021 ◽  
Author(s):  
Jing Xu ◽  
Lianguang Shang ◽  
Jiajia Wang ◽  
Minmin Chen ◽  
Xue Fu ◽  
...  
Keyword(s):  
Indica Rice ◽  
Yield Performance ◽  
Seedling Biomass ◽  
Low Nitrogen

scholarly journals Combining Ability for Grain Yield Performance among CIMMYT Germplasm Adapted to the Mid-Altitude Conditions

2018 ◽  
Vol 10 (3) ◽  
pp. 253
Author(s):  
Casper Nyaradzai Kamutando ◽  
Cosmos Magorokosho ◽  
Shorai Dari
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Additive Genetic Variance ◽  
Inbred Lines ◽  
Nitrogen Stress ◽  
Environment Interaction ◽  
Yield Performance ◽  
Low Nitrogen Stress ◽  
Stress Environments ◽  
Low Nitrogen

The International Centre for Maize and Wheat Improvement (CIMMYT) develops maize (Zea mays L.) inbred lines and hybrids yearly that have several breeding and commercial attributes. However, no genetic analysis has been done on the recently developed inbred lines for yield performance under drought and low-N stress. The objectives of this study were to identify lines with positive general combining ability (GCA) effects for grain yield under stress environments and to identify the best single-cross hybrids with the highest specific combining ability (SCA) effects. Analysis of variance combined across sites showed significant mean squares for genotypes, locations and genotype by environment interaction (GEI) for grain yield. GCAlines, SCA and components of interaction effects were significant across sites. Additive genetic variance was more important than dominance variance in determining yield performance across locations indicating that selection based on grain yield under drought and low-N stress can be effective. Average grain yield across the eight locations ranged from 1.61 t ha-1 to 10.63 t ha-1 while narrow sense heritability for grain yield was 52.6% across sites and was slightly lower under managed drought and low-N stress. The testers CL115807 and CL106622 showed positive and significant GCA effects for yield performance under drought and low-N stress respectively. The best tester across all sites was CL115793 and line CZL0713 had consistently positive GCA effects for grain yield across sites. CML536 × CL115802 and CML312 × CL106508 were the best single crosses under low nitrogen stress sites while hybrid CML312 × C323-45 showed the highest positive SCA effects across sites. In conclusion, our results show that CIMMYT has new lines that have desirable adaptive attributes when grown under drought and low nitrogen stress environments in the mid-altitude region; hence these can be adopted for hybrid, synthetic and OPV formation.

scholarly journals Determination of Heterotic Groups and Heterosis Analysis of Yield Performance in indica Rice

Rice Science ◽  
2018 ◽  
Vol 25 (5) ◽  
pp. 261-269 ◽  
Author(s):  
Wang Yingheng ◽  
Cai Qiuhua ◽  
Xie Hongguang ◽  
Wu Fangxi ◽  
Lian Ling ◽  
...  
Keyword(s):  
Indica Rice ◽  
Heterotic Groups ◽  
Yield Performance

scholarly journals Comparative Study of Maize Agronomics Performance Under Low Nitrogen Soil Availability, in Southern Savanna of Dr Congo

Afrika Focus ◽  
2019 ◽  
Vol 32 (2) ◽  
pp. 57-64
Author(s):  
Jean Pierre Kabongo Tshiabukole ◽  
Gertrude Pongi Khonde ◽  
Amand Mbuya Kankolongo ◽  
Carcy Tshimbombo Jadika ◽  
Roger Kizungu Vumilia
Keyword(s):  
Block Design ◽  
Production Costs ◽  
Average Yield ◽  
Dr Congo ◽  
Yield Performance ◽  
Maize Varieties ◽  
Randomized Complete Block Design ◽  
Two Factors ◽  
Low Nitrogen ◽  
Dosing Method

To determine the growing and yield performance of low nitrogen tolerant maize varieties under fertilized and unfertilized conditions, a study was conducted at the Mvuazi Research Center. Nine varieties were tested with and without fertilizer using the micro-dosing method, following the randomized complete block design with two factors. The results showed a difference among varieties in both crop conditions. The average yield with fertilizer was higher than the yield without fertilizer. The varieties LNTP-W C4 and LNTP-Y C7 registered 5.9 t/ha and 3.6 t/ha respectively under fertilized crop conditions and 7.14t/ha and 7.12t/ha under unfertilized crop conditions. Thus, using Low-N can minimize production costs by improving the productivity of soils low in Nitrogen typical of conditions of the southwestern savanna.

scholarly journals Comparative Study of Maize Agronomics Performance under low Nitrogen Soil Availability, in Southern Savanna of DR Congo

Afrika Focus ◽  
2019 ◽  
Vol 32 (2) ◽  
Author(s):  
Jean Pierre Kabongo Tshiabukole ◽  
Gertrude Pongi Khonde ◽  
Amand Mbuya Kankolongo ◽  
Carcy Tshimbombo Jadika ◽  
Roger Kizungu Vumilia
Keyword(s):  
Block Design ◽  
Production Costs ◽  
Average Yield ◽  
Dr Congo ◽  
Yield Performance ◽  
Maize Production ◽  
Maize Varieties ◽  
Randomized Complete Block Design ◽  
Two Factors ◽  
Low Nitrogen

To determine the growing and yield performance of low nitrogen tolerant maize varieties under fertilized and unfertilized conditions, a study was conducted at the Mvuazi Research Center. Nine varieties were tested with and without fertilizer using the micro-dosing method, following the randomized complete block design with two factors. The results showed a difference among varieties in both crop conditions. The average yield with fertilizer was higher than the yield without fertilizer. The varieties LNTP-W C4 and LNTP-Y C7 registered 5.9 t/ha and 3.6 t/ha respectively under fertilized crop conditions and 7.14t/ha and 7.12t/ha under unfertilized crop conditions. Thus, using Low-N can minimize production costs by improving the productivity of soils low in Nitrogen typical of conditions of the southwestern savanna. KEY WORDS: LOW NITROGEN SOIL, LNTP, MAIZE PRODUCTION, FERTILIZER, SAVANNA, INERA-DRC

Effect of Organic Mulch Materials on Growth and Yield Performance of Rice

2017 ◽  
Vol 08 (02) ◽  
Author(s):  
Shahidul Islam ◽  
Sujan Majumder ◽  
H.M.M. Tariq Hossain ◽  
Md. Delwar Hossain ◽  
MominulHaque Rabin
Keyword(s):  
Growth And Yield ◽  
Yield Performance ◽  
Organic Mulch

Evaluation of Pine Bark, Pine Bark With Wood, and Pine Tree Chips as Components of a Container Plant Growing Media

1986 ◽  
Vol 4 (1) ◽  
pp. 22-25 ◽  
Author(s):  
A.J. Laiche ◽  
V.E. Nash
Keyword(s):  
Organic Amendments ◽  
Pine Bark ◽  
Growth Media ◽  
Ligustrum Sinense ◽  
Pine Tree ◽  
Water Holding ◽  
Low Solubility ◽  
Low Nitrogen ◽  
Very High ◽  
Container Plant

Three woody landscape species, Rhododendron indica ‘President Clay’, Ligustrum sinense ‘variegata’, and Ilex crenata ‘compacta’, were grown in media prepared from fresh pine bark, pine bark with wood, and pine tree chips. Although media were variable in physical properties, all exhibited very high hydraulic conductivity and low water holding capacity. The capacity of these media materials to hold fertilizer elements was very low. Nitrogen, potassium, and phosphorus were rapidly removed by leaching while calciuum and magnesium were retained longer because of the low solubility of dolomitic limestone. Pine bark was the best growth media tested for all plant species. Pine bark with wood was less satisfactory than pine bark and growth was poorest in pine tree chips. More research is needed on the use of the organic amendments with greater amounts of wood before being widely used as organic components of growth media.

Yield performance with heritability measurements of half sib families obtained from maize variety Azam

1970 ◽  
pp. 33-36
Author(s):  
Faizan Mahmood, Hidayat- Ur-Rahman, Nazir Ahmad ◽  
Fahim-ul- Haq ◽  
Samrin Gul, Quaid Hussain ◽  
Ammara Khalid ◽  
Touheed Iqbal ◽  
...  
Keyword(s):  
Grain Yield ◽  
Agronomic Traits ◽  
Heritability Estimate ◽  
Kernel Weight ◽  
Yield Performance ◽  
Grain Moisture ◽  
Maize Variety ◽  
Ear Height ◽  
Sib Families

This study evaluated the performance of 64 half sib families (HSF) derived from “Azam” variety of maize using partially balanced lattice square design with two replications. Data were recorded on grain yield and other agronomic traits. Observations showed difference in half-sib families for studied traits. Among the 64 half-sib families, minimum days to 50% tasseling (51 days) were observed for HS-49 while maximum (57 days) for HS-63. Minimum days to 50% silking (56 days) were counted for HS-6 while maximum (63 days) for HS-23. Minimum days to 50% anthesis (55 days) were counted for HS-1 and HS-6 while maximum (62 days) for HS-23. Similarly, minimum ASI (-2 days) were observed in HS-1, HS-15, HS-16, HS-28 and HS-63 while maximum (2 days) in HS-48. Minimum (60 cm) ear height was recorded for HS-11 and maximum (93.5 cm) for HS-28. Minimum fresh ear weight (1.3 kg) was weighted for HS-17 while maximum (3.2 kg) for HS-21. Grain moisture was recorded minimum (19.35 %) for HS-19 and maximum (31.25%) for HS-2. HS-42 showed minimum (28 g) 100 kernel weight while HS-5 showed maximum (47 g). Grain yield was minimum (2323 kg ha-1) for HS-17 and maximum (5742 kg ha-1) for HS-21. Maximum heritability estimate (0.92) was recorded for fresh ear weight, while minimum (0.41) was observed for ear height.

Adaptability, agronomic and yield performance of exotic olive (Olea europaea) cultivars in Pothwar region of Pakistan

2019 ◽  
Vol 51 (5) ◽  
Author(s):  
Muhammad Azhar Iqbal ◽  
Ishfaq Ahmad Hafiz ◽  
Nadeem Akhtar Abbasi ◽  
Muhammad Kausar Nawaz Shah
Keyword(s):  
Olea Europaea ◽  
Yield Performance ◽  
Olea Europaéa

ATI 441 ALLOY

Alloy Digest ◽  
2013 ◽  
Vol 62 (7) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Exhaust System ◽  
Low Carbon ◽  
Temperature Performance ◽  
System Components ◽  
Low Nitrogen

Abstract ATI 441 is a low-carbon and low-nitrogen ferritic stainless steel with 18 Cr and columbium. The alloy is typically used for exhaust system components. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming. Filing Code: SS-1150. Producer or source: Allegheny Technologies Inc..

ALLEGHENY LUDLUM E-BRITE 26-1 ALLOY

Alloy Digest ◽  
1979 ◽  
Vol 28 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Crevice Corrosion ◽  
Heat Treating ◽  
Refining Process ◽  
Low Carbon ◽  
Vacuum Refining ◽  
Temperature Performance ◽  
Corrosive Environments ◽  
Chloride Stress Corrosion Cracking ◽  
Low Nitrogen

Abstract ALLEGHENY LUDLUM E-BRITE 26-1 ALLOY is a low-carbon, low-nitrogen ferritic stainless steel made by a vacuum refining process. It provides: (1) Excellent resistance to pitting and crevice corrosion in chloride-containing environments, (2) Excellent resistance to chloride stress-corrosion cracking, (3) Resistance to intergranular corrosion, (4) Resistance to a wide variety of corrosive environments, and (5) Improved toughness and ductility after welding. Its applications include equipment for handling caustic, organic acids, nitric acid, bleach solutions, urea and chloride containing cooling waters. This datasheet provides information on composition, physical properties, microstructure, hardness, and tensile properties as well as fracture toughness. It also includes information on low temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-360. Producer or source: Allegheny Ludlum Corporation.

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