Plant Breeding
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Assessment of Distillery Spent Wash Water as a Potential Bionutrient Supplement for Spring-Planted Sugarcane (Saccharum officinarum L.) [RESEARCH NOTE]
Muhammad Nawaz, Muhammad Umer Chattha, Sadia Khan, Muhammad Bilal Chattha, Muhammad Ijaz, Shahbaz Khan, Hassan Munir, Muhammad Umair Hassan, and Muhammad Usman Chattha
The study was conducted to evaluate the effect of the combined application of the sugar industry by-product spent wash water (SWW) and inorganic fertilizers on the growth, yield and quality of spring-planted sugarcane. The experiment was conducted for two consecutive years (2013 and 2014) in a randomized complete block design with three replications. The combined application of spent wash water (80 t ha-1) + NPK (84:56:56 kg ha-1) markedly increased the leaf area index, crop growth rate, net assimilation rate and total dry matter of millable canes, cane length (cm), weight per stripped cane (kg), and yield of unstripped and stripped cane compared with the other treatments. Moreover, the reduction in spent wash water and NPK rate substantially decreased the quantitative attributes of the crop. Owing to the increase in ...
Supplementation of Commercial Probiotic Lactobacillus casei in Rearing Early Stage Silver Therapon (Leiopotherapon plumbeus) Larvae: Effects on Growth, Body Composition and Stress Tolerance
Frolan A. Aya, Reylan C. Gutierrez, Mark Joseph Reyes, and Luis Maria B. Garcia
Received: September 26, 2023; Revised: October 22, 2024; Accepted: November 4, 2024
Supplementation of probiotics in live feeds and rearing water may improve the growth, survival, and resistance of fish larvae. This study examined the beneficial effect of a commercial probiotic bacteria Lactobacillus casei on the growth, body composition, and stress resistance in early-stage silver therapon (Leiopotherapon plumbeus) larvae. Larvae at 12 d post-hatch (DPH) (9.76 ± 1.32 mm total length [TL] and 13.48 ± 4.80 mg body weight [BW]) were reared in triplicate groups of 15 larvae per tank from 12 – 40 DPH (Phase 1) and 41 – 96 DPH (Phase 2). From 12 – 40 DPH, larvae were fed (I) unenriched Artemia nauplii (no-PB or control group); (II) probiotic-enriched Artemia nauplii (PB); and on (III) probiotic-enriched Artemia nauplii and rearing water (PB + W). The same feeding regime was used from 41 – 96 DPH except that ...
Effects of Culture Media and Duration on In Vitro Maturation and Production of Cỏ Goat Embryos
Van Khanh Nguyen, Huong Thi Thu Vu, Au Thi Hoang, Yen Thi Kim Pham, Dat Van Le, Lan Anh Thi Nguyen, Huu Xuan Quan, Hung Phu Lai, Giang Thi Thanh Nhan, and Lan Doan Pham
This study aimed to evaluate the effects of maturation media and duration on the in vitro maturation (IVM) of Cỏ goat oocytes for the in vitro production of Cỏ goat embryos. In Experiment 1, the highest percentage of matured oocytes and blastocyst rates were observed in the IVM medium consisting of tissue culture medium (TCM) 199 + 10% fetal calf serum (FCS) + 50 ng/mL follicle stimulating hormone (FSH) + 100 µM cysteamine + 10 ng/mL epidermal growth factor (EGF) + 100 units/mL penicillin G potassium + 0.1 mg/mL streptomycin sulphate (P < 0.05). In Experiment 2, Cỏ goat oocytes were cultured in the same IVM medium for 20, 22, and 24 h, respectively. The matured oocyte and blastocyst rates of the 20-h group were lower than those of the 22- and 24-h groups (61.56% vs. 76.81% and 73.48%; 13.76% vs. 24.75% and 24.72% ...
Meta-Comparison of Associated Agronomic Traits and QTLs with High-Temperature Tolerance in Rice (Oryza sativa L.)
Norvie L. Manigbas, Jupiter L. Grospe and Luvina B. Madrid
To identify associated agronomic traits and quantitative trait loci (QTLs) with high-temperature tolerance in rice (Oryza sativa L.), three backcross inbred populations (BC2F4) of NSIC Rc150/Dular, Gayabyeo/Nagina22 and Gayabyeo/Dular were screened during the 2014 dry season. Analysis of microclimate conditions of near canopy such as temperature, relative humidity, and dew point temperature using Micrometeorological Instrument for Near Canopy Environment of Rice (MINCER) confirmed the presence of high-temperature stress during heading and maturity stages. MINCER data showed high temperatures (37.04 ± 0.14 °C), accompanied by dry to high humidity (89.0–35.03 ± 1.82%) condition. Pearson correlation and multiple linear regression analysis were used to evaluate phenotypic traits associated with fertility. Dehiscent high-temperature was correlated with spikelet fertility in NSIC Rc150/Dular and Gayabyeo/Nagina22. Number of spikel...
Effects of Downy Brome (Bromus tectorum L.) and Italian Ryegrass (Lolium multiflorum Lam.) on Growth Inhibition of Wheat and Weeds
Se Ji Jang, Young Beom Yun, Yeon Ji Kim, and Yong In Kuk
The objectives of this research were to determine the inhibitory effects of wheat and weeds by soil application and different extractions of downy brome (Bromus tectorum, DB) and Italian ryegrass (Lolium multiflorum Lam., IRG) shoot and roots, and to identify inhibition substances by fermentation extraction of IRG shoot and roots. Shoot fresh weight (SFW) of two wheat cultivars, Stephens and Tubbs 06, was reduced 28–53% and 53–55% by DB residues grown at 25, 35, and 45 d after seeding (DAS) in sandy loam soil under greenhouse conditions, respectively, compared with the control treatment. SFW of wheat cultivars Stephens and Tubbs 06 was reduced 30–48% and 34–45% by IRG residues grown at 25, 35, and 45 DAS in sandy loam soil under greenhouse conditions, respectively, compared with those of the control. In soil application (150 g m-2 or 300 g m-2) of DB and IRG roots grown at 35 DAS, SFW of both wheat cultivars was reduced 33–52%...
Growth and Flowering of Cut Chrysanthemum as Affected by Source and Time of Light-Emitting Diodes
Kyung-Chul Cho, Da-Un Jeong, Jun-Young Byeon, Mengmeng Gu, Tae-Ho Han, Gab- Cheon Koh, In-Taek Hwang, Gwang-Yeon Ki, Hee-Kon Kim, Byeong-Sam Kim, Seok-Kyu Jung, and Hyun-Sug Choi
The study examined the effects of light sources and light time on the growth and flowering responses of cut ‛Baekma’ and ‛Jinba’ chrysanthemum [Dendranthema grandiflorum (Ramat.) Kitamura] under in vitro and greenhouse conditions in South Korea. In vitro shoot explants were treated with light-emitting diodes (LEDs) sources with white, red (660 nm), blue (450 nm), and red-blue for 5 wk. In a greenhouse experiment, 4-h supplemental lighting was provided with incandescent bulb, red LEDs, or white LEDs staining at 20:00, 22:00, 00:00, or 02:00 h, with 12 h of day length, for 8 wk in ‛Baekma’ and for 7 wk in ‛Jinba’, depending on their typical weeks to flowering. In vitro red LED treatments extended stems of ‛Baekma’ (2.9 cm) and ‛Jinba’ (3.7 cm) adventitious shoots. In the greenhouse, growth and flowering of ‛J...
Phenology and Floral Biology of Roseleaf Raspberry (Rubus rosifolius Sm.) under Medium and Low Elevation Conditions
Shalan Joseph E. Kitma and Calixto M. Protacio
Roseleaf raspberry (Rubus rosifolius Sm.), a thorny weed in the highlands of Quezon province, Philippines, has shown potential in the food industry. Analysis of the phytochemical content of its fruit revealed promising medicinal properties. However, attempts to produce fruits at low elevation have failed, while the specific influence of agrometeorological conditions in lower altitudes is yet to be studied. We investigated the phenological characteristics of roseleaf raspberry plants at different elevations: in their native setting at 774 m above sea level (masl) and at low elevation (31 masl). Plants started producing flowers at the end of October and became more profuse in the later months. An observed critical feature of individual roseleaf raspberry flowers across elevations was poor overlap of anther dehiscence and stigma receptivity. Fruit set failure and flower abortion were abnormalities found to cause low fruit production as wel...
Optimal Growth Conditions for In V itro Cultures of Plant Parasitic Algae Cephaleuros Kunze ex E. M. Fries
Penpadsorn Bunjongsiri and Anurag Sunpapao
The genus Cephaleuros comprises plant parasitic algae distributed in tropical and subtropical zones globally. This study aimed to select culture media and optimize the culture conditions for Cephaleuros species. An extensive survey was conducted in southern Thailand and five species were found, namely, Cephaleuros diffusus on baegu leaves, C. expansa on orange jasmine leaves, C. karstenii on cacao leaves, C. pilosa on mangosteen leaves, and C. virescens on soursop leaves. To select suitable culture media, the five Cephaleuros species were cultured on Bold’s basal medium (BBM), bristol medium, high salt medium (HSM), trebouxia medium, trebouxia bristol medium, and modified BBM. All the Cephaleuros species grew well in BBM, followed by HSM and bristol media. Bold’s basal medium amended with indole- 3-acetic acid (IAA) was found to be the most suitable for growth of all these Cephaleuros species when compared with plain BBM. Furthermore, cultu...
Impact of Long-Term Gravel Mulching on Soil Bacterial and Fungal Communities in the Semi-Arid Loess Plateau of Northwestern China
Yang Qiu, Zhongkui Xie, Yajun Wang, Le Wang, and Cuiping Hua
Gravel mulching is a traditional method of water conservation in the semi-arid regions of China. In this study, we investigated the soil microbial community in a field in China’s Gaolan County which has been gravel mulching for over a period of 18 yr. Compared with the non-mulch control, total organic nitrogen (TON), microbial biomass carbon (MBC), and microbial biomass nitrogen (MBN) were all significantly increased in the field with gravel mulching for over 13 yr. Moreover, after 18 yr, the soil bulk density and sand content increased significantly, thus degrading the soil microenvironment. Gravel mulch significantly altered the bacterial community structure and composition, increased the abundance of Acidobacteria, Gemmatimonadetes, Bacteroidetes, and Firmicutes, and decreased the abundance of Actinobacteria compared with the control. Gravel mulch also significantly changed the fungal community structure and compo...
Biofertilizer and Liquid Organic Fertilizer Production by Klebsiella sp. and Bacillus sp.
Nguyen Thi Huynh Nhu and Nuntavun Riddech
The quality and quantity of organic fertilizers were mainly affected by suitable carriers and technological limitations. Experiments were conducted to determine the potential of Bacillus sp. in enhancing the fermentation process of daily waste substrates and to evaluate the survival of Klebsiella sp. in various carriers. The test for antagonistic activity between Bacillus sp. and Klebsiella sp. showed that they were not competitive against each other. Fruit-bacteria (fruit waste substrate in combination with Bacillus sp.) was the best treatment which had the highest amount of microorganisms on day 15 and on day 30 of the fermentation process. The survival of Klebsiella sp. was monitored over a period of 2 mo in dry inoculation as biofertilizer and in fresh inoculation as liquid organic fertilizer. Compared with bagasse and corn husk, rice straw harbored the highest number of bacteria. In fresh microbial inoculants, molasses was better than d...