Influence of Leaf Harvest on Seed Yield in Cowpea | Chapter 2 | Contemporary Research and Perspectives in Biological Science Vol. 1

The purpose of this study is to determine the period when leaf removal has less impact on pod production. The effect of defoliation on pod production was verified on three pure lines grown in the field. Cowpea is consumed from the seedling stage to the harvest (seedling, young leaves, young pods, immature pods, dry pods) and is used in several African dishes. In the Sudano-Sahelian zone of Chad, cereals are the basis of food. The diversification of this diet requires the introduction of foods rich in protein and minerals and justifies the quantitative improvement of the leaves and seeds of cowpeas. The experimental device is a split plot with three repetitions with the three genotypes that constitute the main treatments and the nine modes of defoliation. The analysis of variance in the collection data shows a significant difference between the average number of leaves per plant and the number of pods per plant depending on the number of leaf samples (p<0.05). The removal of 5 leaves at 40 days after emergence stimulates pod production. This stage seems to be the ideal stage of sampling. Flowers and immature pods require a maximum of nutrients during flowering and fruiting, and leaf sampling, the seat of synthesis of these nutrients, results in a decrease in the distribution of nutrients. The elaborate sap causes the fall of newly formed flowers and pods. Removing the leaves at this stage would allow farmers to have plenty of leaves and seeds in order to diversify their diet and in turn fight against malnutrition. However, this be extended to other agroecological, soil, and climatic conditions and include other varieties before generalizing.

 

Author (s) Details

Ange Ndogonoudji Alladoum
Department of Biology-geology, Faculty of Science and Technic, University of Sarh, Chad and Department of Life and Earth Sciences, Faculty of Science, University of Science and Technology of Ati, Chad.

 

Dona Adoum
Department of Life and Earth Sciences, Faculty of Science, University of Science and Technology of Ati, Chad.

 

Nassourou Maina Antoine
Department of Biological Sciences, Faculty of Science, University of Maroua, Cameroon

 

 

Jean Baptiste Tchiagam Noubissie
Department of Biological Sciences, Faculty of Science, University of Ngaoundere, Cameroon.

 

Please see the book here:- https://doi.org/10.9734/bpi/crpbs/v1/1952

Identification of Genetic Determinants Controlling Seed Yield and Its Component Traits in Sunflower (Helianthus annuus) | Chapter 7 | Current Perspectives in Agriculture and Food Science Vol. 7

 Sunflower (Helianthus annuus L.) is grown mostly as a source of vegetable oil and proteins in the world. In the course of plant improvement, plant breeders deal with several qualitative traits nowadays. The present investigation was carried out to identify the molecular markers associated with various characters in sunflowers using recombinant inbred lines. Molecular markers in applied breeding programs facilitate the appropriate choice of parents for crosses to map or tag the gene blocks associated with economically important traits. Two sunflower inbred lines namely, TNHSF239-68-1-1-1 and 17B with significant differences for various traits namely, stripe on seed surface, seed color, hull weight and oil content were selected as female and male parents respectively to develop the F2:5 population. Linkage analysis was carried out and five linkage groups were obtained with 19 simple sequence repeats (SSR) markers. Linkage map construction, single marker analysis (SMA) and composite interval mapping analysis were carried out with SSR primers and quantitative traits. In SMA, out of 50 SSR markers, a total of 29 SSR markers were found to be significantly linked to various traits. The adjusted R2 for the regression equation varies from 3.2 to 29.8%. Two traits namely, days to flowering and seed color recorded above 20% R2 value. Hull weight recorded above 10% R2 value. In inclusive composite interval mapping (ICIM), the quantitative trait loci (QTL) analysis resulted in two QTLs namely, seed and volume weight. QTL analyses were performed through inclusive composite interval mapping (ICIM). The QTL analysis revealed each QTL for traits namely, stripes on the seed margin, stripes between the seed margin, 100-seed weight and seed yield. The LOD ranged from 1.5 to 1.9. The adjusted R2 value ranged from 10.6 (seed yield) to 65.0 (stripes between seed margin) percent. Among these QTL, QTL on stripes on the seed margin and stripes between the seed margin may be considered as potential as they recorded very high phenotypic variation accounted. As the distance between the flanking marker is more than 5 cm, fine mapping of this QTL region with more markers may be attempted to utilize these QTL in the marker-assisted back cross programme.

Author(s) Details:

J. Vanitha,
Department of Genetics and Plant Breeding, SRM College of Agricultural sciences, Chengalpattu, 603201, India.

R. Mahendran,
Department of Genetics and Plant Breeding, SRM College of Agricultural sciences, Chengalpattu, 603201, India.

N. Manivannan,
Department of Oilseeds, Tamil Nadu Agricultural University, 641003, Coimbatore, India.

R. Chandirakala,
Department of Oilseeds, Tamil Nadu Agricultural University, 641003, Coimbatore, India.

Please see the link here: https://stm.bookpi.org/CPAFS-V7/article/view/13749

Determination of Heterosis and Inbreeding Depression for Yield and Its Component Traits in Green Gram [Vigna radiata (L.) Wilczek] | Chapter 6 | Emerging Issues in Agricultural Sciences Vol. 4

 The present review was carried out to estimate the importance of the heterosis and inbreeding depression for characteristics of economic significance at F1 and F2 generations of twenty-four crosses of green grandam. Study of heterosis in green gram is main for the plant breeder to discover the superior crosses in first generation itself. In addition to this, the importance of heterosis provides action for deciding genetic variety and also serves as guide to the choice of good parents. A total of 24 crosses containing both F1s and F2s of green grandam along with ten persons were evaluated in randomized block design accompanying three replications at the Brahmanand Mahavidyalaya Rath (Hamirpur), Uttar Pradesh during zaid, 2018. Heterosis over intervening parent and better person was significant to well significant for beginning yield/plant along with additional attributing characteristics. The crosses exhibiting extreme heterosis also articulated high inbreeding cavity both in the certain and negative management for days to 50% flowering, pods/plant, pods/cluster, harvest index and source yield/plant. Use of heterosis breeding can be promising for yield bettering in green gram as the heterosis for yield was the result of accruing occurrence of heterosis for arms per plant, pods/cluster, clusters per plant, pods/plant, and biological yield, sources/pod and harvest index. A few cycles of repeating selection following the pedigree pattern would be active and useful in resorting to all types of gene belongings by maintaining big heterozygosity through the mating of picked plants in early segregating generations.

Author(s) Details:

Pushpendra Singh,
Krishi Vigyan Kendra, District Shivpuri - 473 551, Madhya Pradesh, India.

Please see the link here: https://stm.bookpi.org/EIAS-V4/article/view/10815

Correlation and Path Coefficient Analysis in Mung Bean [Vigna radiata (L.) Wilczek)] | Chapter 3 | Research Highlights in Agricultural Sciences Vol. 9

 Correlation and way analysis was acted using sixteen genotypes of soiled bean for eight component types including source yield. Field experimental was spent money at Agricultural Research Station, Fatehpur, Shekhawati, Sikar (SKN Agriculture University, Jobner) Rajasthan (India) under a randomized block design with three replications; note was recorded on ten plants were picked at random each plot for plant height, pod length, number of children per pod, test weight, children yield per plot and seed yield per hectors inasmuch as for days to 50% flowering and days to adulthood data were written on whole plot basis with the genotypes of mung kernel. At both the genotypic and phenotypic levels, skilled was a positive partnership among plant crest, pod length, and test pressure and seed yield. Days to blooming, days to maturity, and the number of children per pod all correlated otherwise with children yield at both the genotypic and phenotypic levels. Path study revealed a positive and extreme direct effect of days to maturity, pod distance, and seed yield per bully, as well as a negative and extreme direct effect of days to flowering, plant crest, and test weight, in addition to indirect belongings of other component types on seed yield per plot by way of these characters. As a result, these characteristics should be prioritised when selecting genotypes for unclean bean crop bettering.

Author(s) Details:

C. L. Khatik,
Plant Breeding and Genetics, Agricultural Research Station, Fatehpur, Shekhawati, Sikar (SKN Agriculture University, Jobner) Rajasthan - 332301, India.

S. R. Dhaka,
Agricultural Research Station, Fatehpur, Shekhawati, Sikar (SKN Agriculture University, Jobner) Rajasthan - 332301, India.

M. Khan,
Agricultural Research Station, Fatehpur, Shekhawati, Sikar (SKN Agriculture University, Jobner) Rajasthan - 332301, India.

J. Lal,
Agricultural Research Station, Fatehpur, Shekhawati, Sikar (SKN Agriculture University, Jobner) Rajasthan - 332301, India.

K. C. Verma,
Agricultural Research Station, Fatehpur, Shekhawati, Sikar (SKN Agriculture University, Jobner) Rajasthan - 332301, India.

S. C. Mahala,
Agricultural Research Station, Fatehpur, Shekhawati, Sikar (SKN Agriculture University, Jobner) Rajasthan - 332301, India.

D. Tripathi,
Agricultural Research Station, Fatehpur, Shekhawati, Sikar (SKN Agriculture University, Jobner) Rajasthan - 332301, India.

R. Meena,
Agricultural Research Station, Fatehpur, Shekhawati, Sikar (SKN Agriculture University, Jobner) Rajasthan - 332301, India.

Please see the link here: https://stm.bookpi.org/RHAS-V9/article/view/9462

Effect of Real Time Rainfall Pattern on Yield and Yield Attributing Parameters of Toria (Brassica campestris) in an Inceptisols of Assam, India | Chapter 04 | Emerging Challenges in Environment and Earth Science Vol. 2

 "Effect of Real Time Rainfall Pattern on Yield and Yield Attributing Parameters of Toria (Brassica campestris) in an Inceptisols of Assam, India" was studied in the experimental field of AICRP for Dryland Agriculture, Biswanath college of Agriculture, Assam Agricultural University, Biswanath chariali, Assam during the rabi seasons of 2018-19 and 2019-20 under AICRPDA, Factor 1: Sowing dates with four levels (S1-41st SMW, S2-44th SMW, S3-46th SMW, and S4-48th SMW), and factor 2: variety with three levels (V1-JT-90-1(Jeuti), V2-Yellow sarson (Benoy), and V3-TS-38). The effects of varied sowing dates on toria cultivars' growth, yield, and yield attributing features were observed. At 30 DAS, 45 DAS, and 60 DAS, respectively, S1 had higher plant height (43.2 cm, 92.9 cm, and 106.6 cm & 40.2 cm, 89.8 cm, and 101.5 cm) and number of branches (3.8, 5.3, and 7.2 & 3.4, 5.1 and 6.9). With the advancement of sowing dates, yield attributing features such as number of siliqua, number of seeds per siliqua, and 1000 seed weight (g) steadily reduced. V1 (Jeuti) had the highest seed yield (8.9 q ha-1 and 8.1 q ha-1) and stover yield (23.4 q ha-1 and 22.2 q ha-1) among the three varieties in 2018-19 and 2019-20, respectively. S1 had the highest and lowest HI (28.5 and 25.8%, respectively), whereas S4 had the lowest (20.7 percent and 14.6 percent ).

Author(S) Details

R. Borah
All India Coordinated Research Project for Dryland Agriculture, National Innovations on Climate Resilient Agriculture, Biswanath College of Agriculture, Assam Agricultural University, Assam-784176, India.

N. Baruah
All India Coordinated Research Project for Dryland Agriculture, Biswanath College of Agriculture, Assam Agricultural University, Assam-784176, India.

P. K. Sarma
All India Coordinated Research Project for Dryland Agriculture, Biswanath College of Agriculture, Assam Agricultural University, Assam-784176, India.

R. Borah
All India Coordinated Research Project for Dryland Agriculture, Biswanath College of Agriculture, Assam Agricultural University, Assam-784176, India.

A. Sonowal
All India Coordinated Research Project for Dryland Agriculture, Biswanath College of Agriculture, Assam Agricultural University, Assam-784176, India.

P. Borah
All India Coordinated Research Project for Dryland Agriculture, Biswanath College of Agriculture, Assam Agricultural University, Assam-784176, India.

R. Kalita
All India Coordinated Research Project for Dryland Agriculture, Biswanath College of Agriculture, Assam Agricultural University, Assam-784176, India.

P. Neog
Department of Agricultural Meteorology, Biswanath College of Agriculture, Assam Agricultural University, Assam-784176, India.

View Book:- https://stm.bookpi.org/ECEES-V2/article/view/5732