scholarly journals Analisis Diversitas Morfologi dan Potensi Persebaran Maja (Aegle marmelos dan Crescentia cujete) di Mojokerto

Jurnal Agro ◽  
10.15575/8808 ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 213-223
Author(s):  
Fakhri Hafidh ◽  
Budi Waluyo

Tanaman maja memiliki sejarah vital bagi masyarakat Mojokerto. Selain sebagai simbol budaya, maja dimanfaatkan untuk pangan, keperluan medis, dan pertanian. Sekarang, keanekaragaman hayati tanaman lokal ini terancam karena minimnya upaya pelestarian. Penelitian ini bertujuan untuk mengeksplorasi, memetakan sebaran dan potensi sebaran maja serta menganalisis keanekaragaman dan kekerabatannya berdasarkan morfologi. Metode eksplorasi didasari pada survey ekogeografi dan pemetaannya menggunakan model maxent di aplikasi DivaGIS. Indeks Shannon digunakan untuk menganalisis keanekaragaman. Analisis kekerabatan menggunakan aplikasi DARwin dengan metode Neighbor-Joining dan Hierarchical clustering. Hasil penelitian ini mengindikasikan adanya penurunan populasi maja secara masif di mayoritas wilayah Mojokerto. Kecamatan Trowulan, Jetis, Kota Mojokerto, dan Ngoro menjadi pusat distribusi aktual maja. Indeks Shannon menunjukkan bahwa keanekaragaman morfologi maja pada parameter kualitatif (0,15) jauh lebih rendah dibanding kuantitatif (4,95). Secara umum, keanekaragaman morfologi maja di Mojokerto tergolong dalam kategori sedang (1,95). Ada 4 kategori maja di Mojokerto berdasarkan pengelompokan menggunakan Neighbor-Joining dan 3 kategori menggunakan Hierarchical Clustering.Maja has a vital role in Mojokerto civilization. Aside as a cultural symbol, maja also used as religious festivals, medical purpose, and agricultural practice. Today, the diversity of maja is endangered because of the minimum conservation. The research was conducted to map the actual and potential distribution of Maja. The research also analyzes the diversity and kinship of maja. The Maxent model in DivaGIS was used as the bases of the ecogeographical survey and mapping.. The morphological diversity of maja was assessed by Shannon index and the cluster analysis was carried out based on Neighbor-joining dan Hierarchical clustering method using DARwin software. The result shows that the diversity index of maja in Mojokerto is classified as medium with the value of 1.95. Maja's kinship is divided into 4 groups based on qualitative and 3 groups based on quantitative traits. Maja was spread in Mojokerto and concentrated in 4 sub districts of Trowulan, Jetis, Mojokerto, and Ngoro. Based on the comparison with maxent predictions, there is a massive maja population loss in Mojokerto. Land conversion and plant substitution is a major cause of decrease of maja population.


2020 ◽  
Vol 21 (12) ◽  
Author(s):  
Ruth Stella Petrunella Thei ◽  
Abdul Latief Abadi ◽  
Gatot Mudjiono ◽  
Didik Suprayogo

Abstract. Thei RSP, Abadi AL, Mudjiono G, Suprayogo D. 2020. The dynamics of Arthropod diversity and abundance in rice field ecosystem in Central Lombok, Indonesia. Biodiversitas 21: 5850-5857. Arthropods have roles as pests, decomposers, pollinators, and natural enemies of pests. Natural enemies play a vital role in pest population control by predation or parasitism. A study of the arthropod community in the rice field ecosystem was conducted in Central Lombok, Indonesia from December 2009 to March 2010 in order to elucidate the composition, structure, and dynamic diversity of arthropods present. Arthropod sampling was done by pitfall traps, yellow pan traps, and insect net. Arthropod dynamic diversity, especially of natural enemies, was determined by diversity index, dominance index, evenness analysis, and pictorial analysis. Based on taxonomical perspective, as many as 98 arthropod species were found, including 85 insect species from 59 families and 9 orders; and 13 spider species in 6 families. Based on the ecological functions, predator arthropods were the most common (33 species, dominated by spiders), but the phytophage arthropods had the most species richness (49.34%). A high Shannon index (3.18) and Pilou index (0.7) indicated dominant arthropods in the ecosystem. Arthropod species richness and diversity increased alongside rice development and decreased after harvest.



2017 ◽  
Vol 155 (10) ◽  
pp. 1594-1609 ◽  
Author(s):  
N. HLADNI ◽  
S. TERZIĆ ◽  
B. MUTAVDŽIĆ ◽  
M. ZORIĆ

SUMMARYKnowledge of genetic diversity of confectionary sunflower can have a large impact on its use in breeding programmes. However, levels and distribution of genetic variation within the confectionary sunflower gene pool are still not adequately explored. The aim of the present paper was to describe the diversity of 68 confectionary sunflower genotypes: open-pollinated varieties, lines and hybrids. A total of 32 morphological traits were used for characterization. The Shannon & Weaver diversity index (H) was estimated as a measure of morphological diversity. The mean value of the Shannon index was 0·71, which indicates a high morphological diversity. The lowest diversity was found for leaf descriptors, moderately high to high for seed traits, while the highest values were found for disc flowers and ray florets. The highest individual descriptor diversity was found for: head attitude, the angle of leaf lateral nerves and ray floret disposition. The homogeneity analysis (HOMALS) multivariate reduction technique for nominal categorical data proved to be an efficient method for a comprehensive overview of genotype diversity and group homogeneity. Besides diversity, the number of categories and uniformity of genotype distribution determines discriminative power of descriptors. Traits that contributed the most to the distinction of genotypes were identified, enabling differentiation of genotypes with similar phenotypic attributes. The highest discriminative power was observed in traits such as anthocyanin colouration of stigma (DFIA), seed colour of stripes and seed main colour. The genotypes tested formed two distinctive major groups of varieties and hybrids with inbred lines widely dispersed along both axes. A separate grouping was obtained per the most discriminative traits based on HOMALS analysis, while the best separation was obtained using DFIA. Isolated genotypes that may not be representative by yield or seed-specific traits can be useful sources of traits for breeding. Morphological characterization can be used to improve description and classification of confectionary sunflower germplasm when evaluating diversity.



2021 ◽  
Vol 11 (10) ◽  
pp. 4628
Author(s):  
Macarena Iniesta-Pallarés ◽  
Consolación Álvarez ◽  
Francisco M. Gordillo-Cantón ◽  
Carmen Ramírez-Moncayo ◽  
Pilar Alves-Martínez ◽  
...  

Current agricultural productivity depends on an exogenous nutrient supply to crops. This is of special relevance in cereal production, a fundamental part of the trophic chain that plays a vital role in the human diet. However, our agricultural practices entail highly detrimental side-effects from an environmental point of view. Long-term nitrogen fertilization in croplands results in degradation of soil, water, and air quality, producing eutrophication and subsequently contributing to global warming. In accordance with this, there is a biotechnological interest in using nitrogen-fixing microorganisms to enhance crop growth without adding chemically synthesized nitrogen fertilizers. This is particularly beneficial in paddy fields, where about 60% of the synthetic fertilizer that has been applied is dissolved in the water and washed away. In these agricultural systems, N2-fixing cyanobacteria show a promising biotechnological potential as biofertilizers, improving soil fertility while reducing the environmental impact of the agricultural practice. In the current study, Andalusian paddy fields have been explored to isolate N2-fixing cyanobacteria. These endogenous microorganisms have been subsequently re-introduced in a field trial in order to enhance rice production. Our results provide valuable insights regarding the use of an alternative natural source of nitrogen for rice production.



2020 ◽  
Vol 21 (3) ◽  
Author(s):  
ZAHLUL IKHSAN ◽  
HIDRAYANI ◽  
YAHERWANDI ◽  
HASMIANDY HAMID

Abstract. Ikhsan Z, Hidrayani, Yaherwandi, Hamid H. 2020. The diversity and abundance of Hymenoptera insects on tidal swamp rice field in Indragiri Hilir District, Indonesia. Biodiversitas 21: 1020-1026. Hymenoptera is one of the four largest insect orders and it plays a vital role in human life as pollinators, parasitoids, and predators. Hymenoptera parasitoids are particularly important as agents of biological control of pest. The objective of this research was to study the diversity and abundance of Hymenoptera on tidal swamp rice field in Indragiri Hilir District, Riau Province, Indonesia. Samplings were conducted in 3 sub-districts of rice production centers, namely Batang Tuaka, Keritang and Reteh, using four trapping techniques (i.e. insect net, malaise trap, pitfall trap, and yellow pan trap). Shannon diversity index (H '), Krebs evenness index (E), and Jaccard similarity index (Is) were calculated. We found 4,701 individuals consisting of 39 families and 319 species of Hymenoptera at the three studied areas. Tidal swamp rice in Indragiri Hilir District had a high species diversity of Hymenoptera parasitoids and Hymenoptera predators, but a moderate species diversity of Hymenoptera pollinators. Species diversity and evenness of Hymenoptera parasitoids and predators were higher in Keritang than in Batang Tuaka and Reteh. The families of Formicidae, Braconidae, Ichneumonidae, and Scelionidae had the highest number of species, while Formicidae, Scelionidae, Diapriidae, and Braconidae had the highest number of individuals. Based on these findings, the abundance and diversity of Hymenoptera insects in Indragiri Hilir District have the potentials to be developed as biological agents to control pests on tidal swamp rice in this area.



2014 ◽  
Vol 70 (6) ◽  
Author(s):  
Mohd Fitri Masarudin ◽  
Maisarah Mohamad Saad

The diversity of arthropod consists of pests and predators in rice fields were contribute to the biological control of crop pests at different stages of growth. The rice fields in Batang Lupar, Sarawak has diverse ecological conditions as well as presence of arthropod too. The study in MARDI research plot Batang Lupar in Sri Aman, Sarawak had been done on traditional rice varieties, Bubuk, Bali and Mamut by using sweeping net. The entire specimens were sorted out and classified into the smallest possible taxa. Statistical analysis were analysed by using Shanon-wiener Diversity Index, Evenness Shannon Index and Margalef Richness Index. A total of 272 individual arthropods had been collected and it consists of 7 order, 18 families and 23 species. Among of that 3 species are spiders, 9 species are insect pests and 11 species are insect predators. Analysis data for the diversity of arthropod has shown that there were no significantly different between three varieties, Bubuk, Bali and Mamut (P > 0.05). Besides that, diversity of the arthropod in Bali is higher than Bubuk and Mamut. 



Author(s):  
R. T. Maruthi ◽  
A. A. Kumar ◽  
S. B. Choudhary ◽  
H. K. Sharma ◽  
Jiban Mitra

Commercial prospects of sunnhemp inspired present study to understand geographical distribution pattern(s) and to scale agro-morphological diversity spectrum of forty-four sunnhemp accessions naturalized across diverse habitats of India. Field experiment revealed broad spectrum diversity for all the 11 agro-morphological traits. Wider range of plant height (110.50 to 173.17 cm), number of pods per plant (35.33 to 143.00), seeds per pod (6.33-15.17g) and seed yield per plant (8.27-29.43g) highlighted the adequacy of present genetic resources to improve sunnhemp for diversified applications. Principal component analysis of the agro-morphological characters identified the first PC with 1109.6 eigen value explaining 61.70% of total variation followed by PC-II (22.9%) and PC-III (11.1%). In PC-I significant contribution was made by traits like NLP, NPP and PH. Agglomerative hierarchical cluster analysis grouped all accessions into four distinct seed producing clusters irrespective of their origin. Cluster wise mean values suggested that cluster-II is the best with outstanding trait values for majority of traits. DIVA-GIS based analysis identified accessions from Rajasthan, Western Gujarat and Jharkhand with high diversity index for number of leaves/plant. But, accessions from North West Jharkhand and Maharashtra with highest diversity index for seed yield/plant.



2017 ◽  
Vol 10 (2) ◽  
pp. 76-81 ◽  
Author(s):  
Fernanda Avelino Capistrano ◽  
Gisele Luziane de Almeida ◽  
Leandro Silva Barbosa

Resumo. No presente estudo procuramos entender o principal substrato de ocorrência de ninfas de Plecoptera (Insecta) em rios do Parque Estadual da Pedra Branca (Rio de Janeiro, RJ, Brasil). As coletadas das ninfas foram realizadas entre agosto/2008 a março/2009, em cinco riachos localizados a 200 m de altitude. Foram investigados cinco tipos diferentes de substrato: areia, folhiço retido, folhiço de fundo, rocha com musgo e rocha solta lisa. Além da coleta de imaturos, a temperatura da água e do ar, o pH, a largura e a profundidade dos riachos, e a velocidade da água (método de flutuação) foram medidas. A Análise de Espécies Indicadoras e o Teste de Monte Carlo foram utilizados para determinar a preferência de habitats pelas morfoespécies. O índice de Shannon foi utilizado para verificar a maior diversidade entre os substratos e os rios. Uma análise de agrupamento foi realizada a fim de verificar a similaridade física e biológica dos rios. Um total de 559 ninfas foi coletado e distribuídos em seis morfoespécies. O substrato ‘folhiço retido’ mostrou-se como o de maior abundância e riqueza em todos os riachos estudados. A heterogeneidade de substratos foi apontada como principal fator de diversidade entre os pontos de coleta.Diversity and substrate distribution of Plecoptera nymphs (Insecta) in strems of Parque Estadual da Pedra Branca, Rio de Janeiro, BrazilAbstract. The present study contributes to the understanding the main substrate where Plecoptera nymphs have occur in streams of Parque Estadual da Pedra Branca (Rio de Janeiro municipality, Rio de Janeiro State, Brazil). The collects of the nymphs were realized between August 2008 to March 2009, in five streams located at 200 m. asl. Five different substrates were investigated: sand, litter deposited in pool areas, litter in riffle areas, stones with moss and free stones. In addition to the collection of nymphs, water and air temperatures, pH, width and depth of the streams, and water velocity (float method) were measurement. The Indicator Species Analyses and Monte Carlo Test were used to determine the habitat distributions of the insects. The Shannon Index was used to verify the diversity index of streams and substrates. The Cluster Analysis using the similarity index of Morisita, was used to verify the physical and biological similarity of the streams studied. A total of 559 nymphs were collected and distributed by six taxa. The litter was the substrate with high abundance and diversity. The heterogeneity of substrates maybe the factor to explain the diversity between the areas collected.



Author(s):  
Ulia Hanum

Penelitian ini dilakukan untuk mengetahui lebih jauh mengenai konsep pembelajaran berbasis belajar dari lingkungan sebagai media penunjang pembelajaran biologi. Secara khusus tujuan penelitian ini adalah untuk mengetahui keragaman Liliopsida dan menganalisis kelayakannya untuk digunakan sebagai media pembelajaran biologi. Penelitian dilakukan di pekarangan SMA Negeri 1 Sawang Kabupaten Aceh Utara. Metode pengumpulan data adalah survei dan kuadrat. Analisis data untuk indek keragaman dilakukan dengan Indeks Keragaman Shannon (H’), Indeks Kemerataan (E’). Analisis data Indeks Nilai Penting (INP) untuk menetapkan dominasi suatu jenis Liliopsida terhadap jenis Liliopsida lainnya dalam suatu komunitas. Sedangkan untuk kelayakan diuji dengan rumus penduga nilai kelayakan (K). Hasil penelitian diperoleh 37 jenis Liliopsida dari 6 familia. Berdasarkan hasil analisis Indeks Nilai Penting, pada tiap stasiun pencuplikan diketahui jenis Liliopsida yang mendominasi lebih dari satu jenis. Pada stasiun I dan II terdapat 3 jenis Liliopsida yang mendominasi komunitas tersebut, sedangkan pada stasiun III ada 6 jenis Liliopsida yang mendominasi. Indeks keragaman Shannon menunjukkan tingkat keragaman Liliopsida di pekarangan SMA Negeri 1 Sawang termasuk kategori sedang dan Indeks kemerataan menunjukkan bahwa distribusi jumlah individu setiap jenis Liliopsida di setiap lokasi relatif terdistribusi secara merata. Hasil pengujian kelayakan menunjukkan tumbuhan anggota Liliopsida di pekarangan SMA Negeri 1 Sawang sangat layak digunakan sebagai media pembelajaran biologi konsep keanekaragaman hayati, khususnya keanekaragaman hayati tumbuhan (K= 120 %). Kata Kunci: Keragaman liliopsida, Media Pembelajaran dan Analisis Kelayakan The objective of this research was to know the further concerning of learning concept study-based from environmental as a supporting media of biological study. The main objective of this research was to know Liliopsida diversity and to analyze feasibility of Liliopsida species to used as biology learning media. The research was conducted in school-yard of SMA Negeri 1 Sawang Kabupaten Aceh Utara. The sampling was done by survey and squares method. Data analyzed using the Shannon index (H’) and Evenness index (E’). The important value index, to establish the dominance of one Liliopsida species to others Liliopsida in one community. Feasibility study measured by K formula (feasibility value assessment). The result showed that there were 37 species of which consist of 6 families. The important value index showed that in each sampling stations have more than one Liliopsida species as the dominance species. There were 3 dominance Liliopsida species from I and II sampling stations, whereas in III sampling station there were 6 dominance Liliopsida species. Shannon diversity index showed that the diversity level of Liliopsida in school-yard of SMA Negeri 1 Sawang were rated medium and Evenness index showed that a distribution of individual number of Liliopsida were relatifly apportionmented. The result of feasibility study showed that Liliopsida in school-yard of SMA Negeri 1 Sawang was very reasonable to be used as biology learning media in a biodiversity concept, specifically for plants biodirversity (K= 120 %). Keywords: Diversity, Liliopsida, Learning Media and Feasibility Study



2020 ◽  
Vol 12 (15) ◽  
pp. 17121-17128
Author(s):  
Kumudu B. Wijesooriya ◽  
Lakshani S. Weerasekara ◽  
Kithsiri B. Ranawana

Sri Lanka harbours 20 scorpion species belonging to four families, of which 15 are endemic.  The distribution and ecology of scorpion fauna in Sri Lanka is poorly known.  In this study, we surveyed the diversity of scorpions in the Polonnaruwa Archaeological Reserve in the dry zone of Sri Lanka.  Microhabitats were thoroughly observed using the direct visual encounter method and UV lights from July to November 2018 for about seven hours (19.00–02.00 h) by two to three observers.  Species, abundance, age/sex, and microhabitat features were recorded.  Diversity indices, including α-diversity and β-diversity, were calculated. Heterometrus swammerdami was the most abundant species recorded, while Isometrus thwaitesi was the rarest.  Reddyanus loebli and R. besucheti were common in both open and forest habitat types.  Charmus laneus was recorded for the first time in Polonnaruwa.  The highest Shannon Index and Margalef Diversity Index values were recorded in open habitats, but species evenness was low compared to forest habitats.  Sørensen index values showed a 58% species similarity between two habitats.  The results presented here contribute to the knowledge of the diversity of scorpions in these historically significant sites.  This can serve as a basis for future research on the impact of habitat modification and fragmentation on populations, distribution and ecology of scorpions.



2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Yan Lv ◽  
Gang Ren ◽  
Xiaojun Ren

Objective. To explore the changes of intestinal flora and lymphocyte subsets in patients with chronic renal failure (CRF). Methods. 60 CRF patients who were treated from June 2018 to June 2019 were selected; 60 healthy persons were selected as the control group. 16S rDNA was used to detect the expression of Lactobacillus, Enterobacteriaceae, Enterococcus, Bacteroides, Clostridium, and Bifidobacterium in the feces of the two groups. Illumina Miseq sequencing (Solexa sequencing technology) method was used to analyze the structural differences and species diversity of intestinal flora, including species richness index (Chao) and diversity index (Shannon, Simpson). Flow cytometry was used to detect the levels of lymphocytes and their subgroups of the two groups. Pearson correlation analysis was used to analyze the correlation between Chao and lymphocyte subsets. Results. The number of Enterobacteriaceae and Enterococcus in CRF group were higher than those in the control group ( P < 0.05 ), while the Lactobacillus, Bacteroides, Clostridium, and Bifidobacterium were opposite ( P < 0.05 ). The Simpson index of the CRF group was lower than that of the control group, while the Chao index and Shannon index were opposite ( P < 0.05 ). The levels of CD3+, CD4+, CD8+, and CD4+/CD8+ in the CRF group were lower than those in the control group, while the levels of CD14+, CD19+, and CD16+/CD56+ were opposite ( P < 0.05 ). The intestinal flora Chao index of CRF group was negatively correlated with the levels of CD3+, CD4+, and CD8+ (r = −0.692, P = 0.019 ; r = −0.669, P = 0.021 ; r = −0.603, P = 0.028 ). The intestinal flora Chao of CRF group is positively correlated with the level of CD14+ and CD16+/CD56+ (r = 0.615, P = 0.026 ; r = 0.758, P = 0.016 ). Conclusion. There are intestinal flora disorder and the imbalance of immune function in CRF patients, which are mainly manifested in the change of intestinal flora structure, the increase of richness and diversity of intestinal flora, and the decrease of lymphocyte subgroups. There is correlation between the imbalance of intestinal colony and the imbalance of immune function.



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