Evaluation of Seed Yield of Nigerian Bambara Groundnut  [Vigna subterranea (L.) Verdc.] Landraces under  Varying Water Conditions

Seed yield of selected Nigerian Bambara Groundnut landraces under two varying water conditions was evaluated. Twenty eight (28) Bambara groundnut accessions were planted in a randomized complete block design with two treatments (Non-water stressed and Water stressed) and replicated five times. The experiment was conducted at the Experimental Garden of the Department of Biological Sciences, Federal University of Technology, Minna, Niger State. The accessions were planted in planting bags during the cropping season of 2016 between July and October. The two treatments were rain fed until maturity except during the period of exposure to water stress where the water stressed plants were transferred to a screen house made with polyvinyl ceiling to prevent water during the flowering stage for two weeks. It was observed that water stress reduced the yield of the Bambara groundnut landraces by 47%. Accessions NGB-01646-B, NGR-NI-20-H and NGB-01491 which had relatively high yield in the stressed and non- water stressed condition were considered the most drought tolerant accessions and accession NGR-KG-02-C with low yield both in stressed and non-stressed conditions was identified as the most susceptible accession. Accessions which had high yield only in water stressed conditions could serve as elite line for Bambara groundnut for areas which have problem of drought. These drought tolerant accessions identified in the research can serve as potential parent lines in breeding programmes aimed at the development of drought tolerant varieties of Bambara groundnut.

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Canola seed yield and phenological responses to plant density

Canadian Journal of Plant Science ◽

10.1139/cjps-2015-0093 ◽

2016 ◽

Vol 96 (1) ◽

pp. 151-159 ◽

Cited By ~ 11

Author(s):

Gan Yantai ◽

K. Neil Harker ◽

H. Randy Kutcher ◽

Robert H. Gulden ◽

Byron Irvine ◽

...

Keyword(s):

Seed Yield ◽

Plant Density ◽

Block Design ◽

Positive Association ◽

High Yield ◽

Western Canada ◽

Flowering Period ◽

Canola Seed ◽

Randomized Complete Block Design ◽

Plant Densities

Optimal plant density is required to improve plant phenological traits and maximize seed yield in field crops. In this study, we determined the effect of plant density on duration of flowering, post-flowering phase, and seed yield of canola in diverse environments. The field study was conducted at 16 site-years across the major canola growing area of western Canada from 2010 to 2012. The cultivar InVigor® 5440, a glufosinate-resistant hybrid, was grown at five plant densities (20, 40, 60, 80, and 100 plants m−2) in a randomized complete block design with four replicates. Canola seed yield had a linear relationship with plant density at 8 of the 16 site-years, a quadratic relationship at 4 site-years, and there was no correlation between the two variables in the remaining 4 site-years. At site-years with low to medium productivity, canola seed yield increased by 10.2 to 14.7 kg ha−1 for every additional plant per square metre. Averaged across the 16 diverse environments, canola plants spent an average of 22% of their life cycle flowering and another 27% of the time filling seed post-flowering. Canola seed yield had a negative association with duration of flowering and a positive association with the days post-flowering but was not associated with number of days to maturity. The post-flowering period was 12.7, 14.7, and 12.6 d (or 55, 68, and 58%) longer in high-yield experiments than in low-yield experiments in 2010, 2011, and 2012, respectively. We conclude that optimization of plant density for canola seed yield varies with environment and that a longer post-flowering period is critical for increasing canola yield in western Canada.

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Competition between drought-tolerant upland rice cultivars and weeds under water stress condition

Planta Daninha ◽

10.1590/s0100-83582013000200006 ◽

2013 ◽

Vol 31 (2) ◽

pp. 291-302 ◽

Cited By ~ 5

Author(s):

F.B. Cerqueira ◽

E.A.L. Erasmo ◽

J.I.C. Silva ◽

T.V. Nunes ◽

G.P. Carvalho ◽

...

Keyword(s):

Water Stress ◽

Leaf Area ◽

Stress Condition ◽

Upland Rice ◽

Total Concentration ◽

Dry Weight ◽

Rice Cultivars ◽

Drought Tolerant ◽

Water Stress Condition ◽

Water Conditions

The objective of this study was to evaluate the competitiveness of two cultivars of upland rice drought-tolerant, cultured in coexistence with weed S. verticillata, under conditions of absence and presence of water stress. The experiment was conducted in a greenhouse at the Experimental Station of the Universidade Federal de Tocantins, Gurupi-TO Campus. The experimental design was completely randomized in a factorial 2 x 2 x 4 with four replications. The treatments consisted of two rice cultivars under two water conditions and four densities. At 57 days after emergence, were evaluated in rice cultivars and weed S. verticillata leaf area, dry weight of roots and shoots and total concentration and depth of roots. Was also evaluated in rice cultivars, plant height and number of tillers. Water stress caused a reduction in leaf area, the concentration of roots and vegetative components of dry matter (APDM, and MSR MST) of rice cultivars and Jatoba Catetão and weed S. verticillata. The competition established by the presence of the weed provided reduction of all vegetative components (MSPA, and MSR MST) of cultivars and Jatoba Catetão. It also decreased the number of tillers, the concentration of roots and leaf area. At the highest level of weed competition with rice cultivars, a greater decrease in vegetative components and leaf area of culture, regardless of water conditions.

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Effect of Nitrogen Fertilizer and Fruit Positions on Fruit and Seed Yields of Okro (Abelmoschus Esculentus L. Moench)

Journal of Plant Studies ◽

10.5539/jps.v6n1p39 ◽

2016 ◽

Vol 6 (1) ◽

pp. 39

Author(s):

Y. Zubairu ◽

J. A. Oladiran ◽

O. A. Osunde ◽

U. Ismaila

Keyword(s):

Seed Yield ◽

Seed Weight ◽

Block Design ◽

Mother Plant ◽

Nitrogen Levels ◽

N Level ◽

University Of Technology ◽

Randomized Complete Block Design ◽

Cropping Seasons ◽

Seed Yields

Study was conducted in 2006 and 2007 cropping seasons at the experimental field of Federal University of Technology, Minna (9o 401N and 6o 301E), in the Southern Guinea Savanna of Nigeria to determine the effects of N fertilizer and the fruit positions on fruit and seed yield of okro. The treatment comprised factorial combination of five nitrogen levels (0, 30, 60, 90 and 120 kg/ha) and five fruit positions on a mother-plant (3, 5, 7, 9 and 10) which were replicated three times and laid in a Randomized Complete Block Design (RCBD). The results indicated that significant taller plants were recorded in the plots that received 120 kg N/ha while shorter plants were recorded in plots that received 0 N/ha in both years of the study. The higher N level of 120 kg/ha and lower fruit position of 3 significantly gave higher number of fruit yield while the yield decreased with decrease in N level and increase in fruit position on the mother-plant. Similarly, heavier fruits were recorded in lower fruit positions and higher N levels. The fruits formed at the lower position 3 and 5 produced more seeds with higher seed weight than those formed at the higher positions. The results also showed that significantly higher seed yield was recorded at N level of 120 kg/ha ?.

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Genotypic and Phenotypic Variability for Yield and its Components in Normal and Late Sown Chickpea (Cicer arietinum L.)

Legume Research - An International Journal ◽

10.18805/lr-505 ◽

2019 ◽

Author(s):

D Yücel

Keyword(s):

Cicer Arietinum ◽

Phenotypic Variability ◽

Block Design ◽

Climatic Conditions ◽

High Yield ◽

Breeding Programs ◽

Cicer Arietinum L ◽

Drought Tolerant ◽

Coefficients Of Variation ◽

Late Sowing

Chickpea (Cicer arietinum L.) is one of the important legumes widely grown for dietary proteins in semi-arid Mediterranean climatic conditions. The main goal of any breeding programs in the world is to produce high yield and better quality genotypes for farmers and commercial growers to be released as cultivars. Present research has been conducted to select more desirable characteristics that may contribute to the improvement of drought tolerant chickpea. Thirty-two chickpea genotypes along with two control varieties were evaluated in winter and late sowing conditions in 2015 and 2016, in randomized complete block design with three replications. Phenotypic coefficients of variation were found to be higher than genotypic coefficients of variation for all the traits. The highest heritability along with high genetic advance was found for hundred seed weight followed by podding day, plant height, flowering day and first pod height in normal and stress conditions. These traits can be improved by giving special attention during selection.

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Descriptive Statistics and Heritability for Agronomic Traits and Grain Micronutrient Content in Rice (Oryza sativa L.)

Current Journal of Applied Science and Technology ◽

10.9734/cjast/2019/v38i630419 ◽

2019 ◽

pp. 1-10

Author(s):

Avinash Kumar ◽

Ashutosh Kumar ◽

N. K. Singh ◽

Rajesh Kumar ◽

S. K. Singh ◽

...

Keyword(s):

Grain Yield ◽

Agronomic Traits ◽

Oryza Sativa L ◽

Block Design ◽

Zinc Content ◽

Yield Potential ◽

High Yield ◽

Grain Zinc ◽

Iron And Zinc ◽

Breeding Programmes

In the present investigation, 10 parents and their 45 crosses (half diallel) along with 2 standard checks (Rajendra Nilam and Rajendra Mahsuri-1) were evaluated during Kharif, 2018 in Randomized Complete Block Design (RCBD) with 3 replications at Rice Farm Section, Dr. Rajendra Prasad Central Agricultural University (RPCAU), Pusa, Bihar. The objective of this study was to identify promising rice genotypes having desirable combination of morphological traits along with high grain iron and zinc content and high grain yield potential. The results of variability parameters indicated that ample amount of genetic variability was present for all the studied traits. Most of the traits showed high heritability coupled with high genetic advance indicating fruitfulness of selection for improvement of these traits. One genotype (P2×P7) with high grain iron (16.10 ppm) and grain zinc (26.40 ppm) content along with high yield (43.12 g/plant) was identified. Genotypes with high grain iron coupled with high grain yield (P7×P9, P8×P9, P5×P7 and P5×P9) and high grain zinc content coupled with high grain yield (P4×P7, P9×P10, P8×P9 and P5×P7) were also identified. These promising genotypes identified can be used further in breeding programmes to obtain superior segregants with high grain micronutrient content and high grain yield.

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Stabilitas hasil dan adaptabilitas galur-galur harapan kacang Bogor di tiga lokasi

Kultivasi ◽

10.24198/kultivasi.v20i2.32418 ◽

2021 ◽

Vol 20 (2) ◽

Author(s):

Darmawan Saptadi ◽

Noer Rahmi Ardiarini ◽

Budi Waluyo

Keyword(s):

Block Design ◽

Bambara Groundnut ◽

Yield Stability ◽

Yield Potential ◽

High Yield ◽

Vigna Subterranea ◽

Land Type ◽

Randomized Block Design ◽

Adaptation Test ◽

The Stability

AbstrakKacang Bogor (Vigna subterranea (L.) Verdcourt) potensial dikembangkan sebagai komoditi pangan rendah lemak. Pengembangan dan peningkatan hasil komoditas ini dapat dilakukan melalui penyediaan varietas unggul. Tujuan penelitian ini ialah untuk mengetahui stabilitas dan adaptabilitas hasil enam galur harapan kacang Bogor, yaitu GSG 2.1.1, GSG 2.5, GSG 1.5, CCC 1.4.1, PWBG 5.3.1, dan BBL 6.1.1. Penelitian dilakukan di tiga lokasi yang memiliki karakteristik ketinggian tempat, kondisi lahan, dan musim tanam berbeda. Percobaan menggunakan rancangan acak kelompok dengan tiga ulangan yang dilanjutkan dengan analisis varians gabungan. Analisis regresi digunakan untuk menentukan stabilitas dan adaptabilitas hasil berdasarkan Eberhart-Russell dan Finlay-Wilkinson. Hasil penelitian menunjukkan terdapat interaksi genotipe x lingkungan pada bobot hasil panen polong segar dan bobot hasil biji kering. Galur GSG 2.5 dan CCC 1.4.1 mempunyai hasil polong segar dengan rata-rata 15,50 t ha-1 dan 15,71 t ha-1 dan hasil biji kering dengan rata-rata 4,58 t ha-1 dan 4,57 t.ha-1 yang stabil dan beradaptasi luas. Galur GSG 1.5 dan BBL 6.1.1 merupakan galur yang mempunyai potensi hasil tinggi untuk polong segar dengan rata-rata 17,16 t ha-1 dan 18,90 t.ha-1 pada lingkungan yang produktif.Kata Kunci: interaksi G x E, kacang Bogor, pemuliaan tanaman, stabilitas hasil, uji adaptasi Abstract The bambara groundnut (Vigna subterranea (L.) Verdcourt) has the potential to become a low-fat food commodity. The development and improvement of this commodity yield can be accomplished through the introduction of superior varieties. The purpose of this study were to investigate the yield stability and adaptation of six potential Bambara groundnut lines, namely GSG 2.1.1, GSG 2.5, GSG 1.5, CCC 1.4.1, PWBG 5.3.1, and BBL 6.1.1. The study was carried out in three different locations with varying altitude, land type, and growing season. A randomized block design with three replications was implemented in the experiment, which was then followed by a combined analysis of variance. Regression analysis was used to determine the stability and adaptation of yield based on Eberhart-Russell and Finlay-Wilkinson. The results revealed that there was an interaction between genotypes and environments on yield of fresh pods weight and yield of dried seeds weight. Lines of GSG 2.5 and CCC 1.4.1 had fresh pod yields with an average of 15.50 t ha-1 and 15.71 t ha-1 and dry seed yields an average of 4.58 t ha-1 and 4.57 t ha-1 which is stable and wide adaptations. In an ideal environment, the GSG 1.5 and BBL 6.1.1 lines had high yield potential for fresh pods, with an average of 17.16 t ha-1 and 18.90 t ha-1.Keywords: adaptation test, Bambara groundnut, G x E interaction, plant breeding, yield stability

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Genetic Analysis and Selection Criteria in Bambara Groundnut Accessions Based Yield Performance

Agronomy ◽

10.3390/agronomy11081634 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1634

Author(s):

Atiqullah Khaliqi ◽

Mohd Y. Rafii ◽

Norida Mazlan ◽

Mashitah Jusoh ◽

Yusuff Oladosu

Keyword(s):

Genetic Variability ◽

Large Scale ◽

Block Design ◽

Crop Improvement ◽

Yield Component ◽

Bambara Groundnut ◽

Breeding Systems ◽

High Yield ◽

Improvement Programs ◽

The Relationship

The knowledge of genetic variability and breeding techniques is crucial in crop improvement programs. This information is especially important in underutilized crops such as Bambara groundnut, which have limited breeding systems and genetic diversity information. Hence, this study evaluated the genetic variability and established the relationship between the yield and its components in Bambara groundnut based on seed weight using multivariate analysis. A field trial was conducted in a randomized complete block design with three replications on 28 lines. Data were collected on 12 agro-morphological traits, and a statistical analysis was conducted using SAS version 9.4 software, while the variance component, genotypic and phenotypic coefficient variation, heritability, and genetic advance values were estimated. A cluster analysis was performed using NT-SYS software to estimate the genetic relations among the accessions. The results showed significant variability among the accessions based on the yield and yield component characteristics. The evaluated lines were grouped into seven primary clusters based on the assessed traits using the UPGMA dendrogram. Based on the overall results, G5LR1P3, G1LR1P3, G4LR1P1, G2SR1P1 and G3SR1P4 performed the best for the yield and yield components. These improved lines are recommended for large-scale evaluation and utilization in future breeding programs to develop high-yield Bambara groundnut varieties.

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Evaluation of Chickpea (Cicer arietinum L.) Genotypes for Yield and Drought Tolerance under Rain Fed and Irrigated Conditions

International Journal of Plant & Soil Science ◽

10.9734/ijpss/2020/v32i1630378 ◽

2020 ◽

pp. 33-42

Author(s):

R. Divya Madhuri ◽

V. Jayalakshmi ◽

M. Shanthi Priya

Keyword(s):

Andhra Pradesh ◽

Yield Loss ◽

Agricultural Research ◽

Block Design ◽

High Yield ◽

Research Station ◽

Drought Tolerant ◽

Major Constraint ◽

Randomized Complete Block Design ◽

The Mean

In Southern India, drought stress is a major constraint to chickpea production and yield stability. Drought tolerant index (DTI) that provides a measure of drought based on yield loss under drought condition in comparison to normal condition was used for screening drought-tolerant genotypes. This study was conducted to determine drought tolerant genotypes with high yield in stress and non-stress conditions utilising physiological traits. Thirty chickpea genotypes were tested in a randomized complete block design with three replications under rain fed and irrigated conditions at Regional Agricultural Research Station, Nandyal, Andhra Pradesh, India during rabi, 2018-2019. The analysis of variance carried out for yield and drought tolerant traits revealed highly significant differences among the genotypes for all characters under rain fed as well as irrigated conditions. NBeG 776, NBeG 779, NBeG 868, ICCV 181606, MH 13 and MH 14 are drought tolerant. NBeG 776, NBeG 779 and NBeG 868 are suitable under both rain fed and irrigated conditions with significantly higher yields over their respective means. ICCV 181606, MH 13 and MH 14 are suitable exclusively for rain fed condition with significantly superior yields over the mean.

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Evaluation of Drought Tolerance Selection Indices Using Grain Yield in Chickpea (Cicer arietinum L.)

Notulae Scientia Biologicae ◽

10.15835/nsb10310291 ◽

2018 ◽

Vol 10 (3) ◽

pp. 439-446

Author(s):

Irfan ERDEMCI

Keyword(s):

Drought Tolerance ◽

Rank Correlation ◽

Yield Potential ◽

High Yield ◽

Drought Indices ◽

Stressed Condition ◽

Growing Seasons ◽

Drought Tolerant ◽

Selection Indices ◽

Southeast Anatolia

Among abiotic stresses, drought is undoubtedly one of the most important ones, that have great impact on crop growth and productivity worldwide. Therefore, identifying of plants' performance against drought stress and estimating drought tolerance become a necessary part of the breeding phase. The main purpose of the present study was to investigate the effect of several indices that combine drought tolerance and high yield potential in chickpea. The trials were conducted under both stressed and no-stressed environments for two growing seasons (2015/2016-2016/2017) in Southeast Anatolia Region of Turkey. Varyans analysis results showed that there were significant differences among genotypes regarding Yp, Ys, MP, MRP, GMP, REI, STI, MISTIk 1, MISTIk 2, HM, YI, PI, ATI, SNPI and RDY. The genotypes FLIP09-51C, FLIP97-503C and FLIP06-97C had high yield under non-stressed condition, while the genotypes FLIP09-51C, FLIP06-97C and ‘Aksu’ displayed high amount under stressed condition. Thus, the genotypes FLIP09-51C and FLIP06-97C were found as good candidates for commercial recommendation in both conditions. Spearman rank correlation matrix showed that drought indices were significantly related to each other. The yields in stress and no-stress conditions (Yp and Ys) showed a significant and positive correlation with MP, MRP, GMP, REI, STI, MSTIK1, MSTIK2 and HM and showed a negative correlation with PI and RDY. As a result, it has been found that MISTIK2, DI, HM, STI and YI can be used as optimal indicators for screening drought-tolerant genotypes, while FLIP09-51C, FLIP06-97C, EN934 and ‘Aksu’ varieties have been the most tolerant genotypes in terms of these indices examined in study.

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Application of Principal Component Analysis (PCA) for Blackgram [Vigna mungo (L.) Hepper] Germplasm Evaluation under Normal and Water Stressed Conditions

Legume Research - An International Journal ◽

10.18805/lr-4427 ◽

2020 ◽

Author(s):

V.A. Mohanlal ◽

K. Saravanan ◽

T. Sabesan

Keyword(s):

Principal Component Analysis ◽

Water Stress ◽

Seed Yield ◽

Cropping Systems ◽

Principal Component ◽

Component Analysis ◽

Vigna Mungo ◽

Yield Potential ◽

Positive Interaction ◽

Drought Tolerant

Background: Blackgram [Vigna mungo (L.) Hepper] is a popularly known pulse crop in India for its nutritional quality and adaptability to many cropping systems. The crop is mostly cultivated in areas experiencing water stress which reduces the yield potential. Thus, it is imperative to assess the genetic variability present in the existing blackgram germplasm under drought condition. For this, principal component analysis was carried to visualize the complex dataset. This study was aimed to identify key traits and drought tolerant genotypes. Methods: Twenty-one blackgram genotypes were screened in the field condition for water stress where the experiment was laid out in RBD with two replications. Principal component analysis was carried out with thirteen traits in twenty-one genotypes of blackgram under normal and water stressed conditions.Result: In T0 and T1, more than 75% of total variability among thirteen traits was explained by five and four principal component axes respectively. Under water stress, pod length was highly correlated with seed yield per plant. Based on the interaction vectors and PC scores of genotypes, VBG-12062 had a positive interaction with seed yield. Thus, VBG-12062 can be a reliable candidate for breeding high yielding drought tolerant variety.

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