scholarly journals Analysis of Interrelationships of Phenological and Morphological Traits and Grain Yield of Brassica Species under Contrasting Moisture Regimes

2016 ◽  
Vol 6 (19) ◽  
pp. 15-35
Author(s):  
F. Rashidi ◽  
M. M. Majidi ◽  
◽  
Keyword(s):  
Grain Yield ◽  
Morphological Traits ◽  
Brassica Species ◽  
Moisture Regimes

scholarly journals Supporting Physiological Trait for Indirect Selection for Grain Yield in Drought-Stressed Popcorn

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1510
Author(s):  
Samuel Henrique Kamphorst ◽  
Gabriel Moreno Bernardo Gonçalves ◽  
Antônio Teixeira do Amaral Júnior ◽  
Valter Jário de Lima ◽  
Kátia Fabiane Medeiros Schmitt ◽  
...  
Keyword(s):  
Grain Yield ◽  
Multiple Regression ◽  
Morphological Traits ◽  
Vegetation Index ◽  
Agronomic Traits ◽  
Indirect Selection ◽  
Leaf Angle ◽  
Water Restriction ◽  
Leaf Greenness ◽  
Selection Of

The identification of traits associated with drought tolerance in popcorn is a contribution to support selection of superior plants under soil water deficit. The objective of this study was to choose morphological traits and the leaf greenness index, measured on different dates, to estimate grain yield (GY) and popping expansion (PE), evaluated in a set of 20 popcorn lines with different genealogies, estimated by multiple regression models. The variables were divided into three groups: morpho-agronomic traits—100-grain weight (GW), prolificacy (PR), tassel length (TL), number of tassel branches, anthesis-silking interval, leaf angle (FA) and leaf rolling (FB); variables related to the intensity of leaf greenness during the grain-filling period, at the leaf level, measured by a portable chlorophyll meter (SPAD) and at the canopy level, calculated as the normalized difference vegetation index (NDVI). The inbred lines were cultivated under two water conditions: well-watered (WW), maintained at field capacity, and water stress (WS), for which irrigation was stopped before male flowering. The traits GY (55%) and PE (28%) were most affected by water restriction. Among the morpho-agronomic traits, GW and PR were markedly reduced (>10%). Under dry conditions, the FA in relation to the plant stalk tended to be wider, the FB curvature greater and leaf senescence accelerated (>15% at 22 days after male flowering). The use of multiple regression for the selection of predictive traits proved to be a useful tool for the identification of groups of adequate traits to efficiently predict the economically most important features of popcorn (GY and PE). The SPAD index measured 17 days after male flowering proved useful to select indirectly for GY, while, among the morphological traits, TL stood out for the same purpose. Of all traits, PR was most strongly related with PE under WS, indicating its use in breeding programs. The exploitation of these traits by indirect selection is expected to induce increments in GY and PE.

scholarly journals Effects of Enzymatic Biofertiliser on Growth and Yield of Lentil Genotypes under Deficit Irrigation/ Enzimatisko Biomçslojumu Ietekme Uz Daþâdu Lçcu Genotipu Augðanu Un Raþu Irigâcijas Trûkuma Apstâkïos

2014 ◽  
Vol 68 (3-4) ◽  
pp. 174-179
Author(s):  
Mohsen Janmohammadi ◽  
Hamid Mostafavi ◽  
Naser Sabaghnia
Keyword(s):  
Drought Stress ◽  
Grain Yield ◽  
Deficit Irrigation ◽  
Morphological Traits ◽  
Foliar Application ◽  
Growth And Yield ◽  
Sowing Time ◽  
Ecological Zones ◽  
Terminal Drought ◽  
Terminal Drought Stress

Abstract Lentil (Lens culinaris Medic.) is one of the important pulse crops in semiarid agro-ecological zones with a Mediterranean-type climate. Terminal drought stress and poor plant nutrition are important factors limiting crop under these regions. The effects of enzymatic biofertiliser (MOG) application at sowing time or during reproductive stage on some morphological traits and yield components of eight lentil lines were evaluated under deficit-irrigation conditions at Maragheh (37°23' N; 46°16' E) in northwestern Iran. Results revealed that application of biofertiliser did not significantly affect most of the morphological traits. However, foliar application of MOG during early flowering stage somewhat increased 100-grain weight and grain yield and decreased the number of empty pod per plant. Moreover, the results indicated that there was significant diversity between lentil lines for the investigated traits. The best performance for grain yield was recorded for FLIP 86-35L. The overall lack of considerable response of lentil to the MOG treatments may suggest that the optimal efficiency of biofertiliser cannot be achieved under water scarcity conditions. Improvement in the adaptation of enzymatic fertilisers to semi arid regions with terminal drought stress requires to be increased.

scholarly journals Morphological Traits Defining Breeding Criteria for Coastal Quinoa in Chile

2018 ◽  
Vol 46 (1) ◽  
pp. 190-196 ◽  
Author(s):  
Daniela MADRID ◽  
Eduardo SALGADO ◽  
Gabriela VERDUGO ◽  
Pablo OLGUÍN ◽  
Dimitrios BILALIS ◽  
...  
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Morphological Traits ◽  
Phenotypic Diversity ◽  
Germplasm Collection ◽  
High Yield ◽  
Data Set ◽  
Central Chile ◽  
Coastal Lowland ◽  
Grain Yield Components

Coastal/lowland quinoa ecotype is an important source of germplasm due to its cultivation in cold-temperate and high latitude areas. However, the interaction of its morphological traits and yields to define breeding criteria is unknown. The present study was designed to characterize the phenotypic diversity of twelve coastal/lowland quinoas using sixteen standardized morphological descriptors under rainfed conditions in central Chile. Complementary analysis of uni- and multi- variate tools allowed a fuller understanding of interrelationships within quinoa germplasm. Through the analysis of frequency distribution, it was possible to determine that genotypes were characterized by plants having low height and medium grain yield. Cluster analysis revealed that plant morphological variables were independently grouped from grain yield components. Additionally, principal component analysis (PCA, 74.8% of total variation data), revealed the existence of three outstanding genotypes (QC01, QC02 and QC05) that were distantly located from the average dispersion of entire germplasm collection. These genotypes were associated with grain yield components, allowing the identification of two groups of high yield (VI and VII), which yielded 3337.7 and 3052.0 kg ha-1, respectively. The data set presented in this study is the first report of coastal/lowland quinoas assessed in central Chile and could assist the development of breeding programmes in cold-temperate areas having similar agro-climatic conditions.

WUE, protein and grain yield of wheat under the interaction of biological and chemical fertilizers and different moisture regimes

2021 ◽  
Author(s):  
Abolghasem Moradgholi ◽  
Hamidreza Mobasser ◽  
Hamidreza Ganjali ◽  
Hamidreza Fanaie ◽  
Ahmad Mehraban
Keyword(s):  
Grain Yield ◽  
Chemical Fertilizers ◽  
Moisture Regimes

Assessment of Variability of Foxtail Millet [Setaria italica (L.) Beauv.] Genotypes

2020 ◽  
Vol 7 (2) ◽  
pp. 51-61
Author(s):  
Manoj Kandel ◽  
Suk Gurung ◽  
Narayan Dhami ◽  
Jiban Shrestha
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Morphological Traits ◽  
Foxtail Millet ◽  
Leaf Length ◽  
Grain Weight ◽  
Panicle Length ◽  
Thousand Grain Weight ◽  
Leaf Blast ◽  
Days To Maturity

Analysis of genetic diversity and variability is an initial step for crop development in a plant breeding program. Thirty foxtail millet genotypes were evaluated for their ten agro-morphological traits viz. grain yield, days to heading, days to maturity, plant height, leaf length, leaf width, number of nodes per tiller, panicle length, thousand-grain weight, and leaf blast during April to August season of 2018 at Kabre, Dolakha, Nepal. Clustering was done based on variability observed among the genotypes for all the ten traits by the average linkage method. The genotypes were grouped into six clusters. The shortest inter cluster distance between Cluster I and Cluster II was 17.63 and the longest was between Cluster IV and Cluster VI with 47.55. Cluster I had the maximum leaf blast score with the minimum leaf length. The Cluster II had the maximum grain yield and days to 50% heading and the number of nodes per tiller. The Cluster III was characterized by the maximum leaf length and leaf blast value. The genotypes grouped into the Cluster IV were characterized by the lowest value of days to 50% heading and 80% days to maturity and those of Cluster V had the maximum thousand-grain weight. The genotypes categorized into Cluster VI had the maximum plant height, leaf length, and panicle length. Cluster II and Cluster V were good because of their agro-morphological traits. The presence of a high level of diversity among the genotypes indicated their suitability for selection in crop breeding programs. Correlation analysis of genotypes having the maximum panicle length leaf area and higher plant height and shorter maturity period are pre-requisite for improvement in grain yield.

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