scholarly journals Pertumbuhan dan hasil genotipe kedelai (Glycine max (L.) Merril) pada tiga tingkat cekaman kekeringan

Agromix ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 151-165
Author(s):  
Nia Romania Patriyawaty ◽  
Gatut W. Anggara

Drought stress is a major constraint to the production and yield stability of soybean (Glycine max (L.) Merr). Drought stress at the generative phase had a negative impact on soybean potential yield significantly. This study evaluated variation in five soybean genotypes (G1, G2, G3, G4 and G5) in their response to the three levels (100% of field capacity (D1), 80% from field capacity (D2) and 60% from field capacity (D3)) of drought stress in a glass house. This study was arranged in a factorial randomized completely block design with three replications. Results showed that all five genotypes responded significantly (P<0.05) to the drought stress treatments in soybean yield. The average yield was respectively reduced by 8.4% and 11.6% in the D2 and D3 treatments, respectively, compared to the D1 (control). Percent reduction of yield for genotype G4 (19.8%) was lower compared to other genotypes. This is indicated that genotype G4 tolerance to drought stress. The evaluation on the morphological character was potentially to become a screening tool for soybean breeding program.  

2014 ◽  
Vol 33 (1) ◽  
pp. 54
Author(s):  
Suhartina Suhartina ◽  
Purwantoro Purwantoro ◽  
Novita Nugrahaeni ◽  
Abdullah Taufiq

<p>Soybean in Indonesia mostly is planted on the lowland during dry season. During the season, soybean crops face drought stress at generative phase, that reduces grain yield. Planting of drought tolerance variety is an alternative means to overcome this problem. The objective of this research was to evaluate the adaptability and yield stability of soybean lines tolerant to drought stress. Twelve soybean lines and two check varieties (Wilis and Tidar) were evaluated at eight locations during dry season of 2009 and 2010, planted two times in each location. The treatments were laid out in a randomized complete block design with four replications. These sites were Mojokerto, Banyuwangi, Pasuruan, and Jombang (East Java), Bantul and Sleman (Yogyakarta), Mataram and Lombok Barat (NTB). No irrigation was added during reproductive phase of the crop. Soil moisture content at 0-20 cm soil layer during the generative phase was equivalent to pF value of 3.0-4.2. Analysis of variance over locations and planting seasons showed that there was significant interaction between genotypes and environments. Among the tested-lines, DV/2984-330 was the only line that showed average stability with high grain yield, averaging of 1.95 t/ha out of its yield potential of 2.83 t/ha. This line showed good adaptability over locations with water shortage (20-30% field capacity) during generative phase. Grain yield of this promising line was 14% higher compared to that of Tidar and 16% higher to that of Wilis. This line is prospective to be released as new variety, possessing drought stress during generative phase.</p>


Author(s):  
Nishi Mishra ◽  
M.K. Tripathi ◽  
Sushma Tiwari ◽  
Niraj Tripathi ◽  
Neha Gupta ◽  
...  

Background: Soybean is a key crop that grants an imperative supply of oils and proteins to humans and animals; however, its productivity spectacularly diminished owing to the occurrence of drought stress. Methods: The present investigation was executed during Kharif 2018-2019 to recognize drought tolerant genotypes on the basis of an array of morpho-physiological traits. Morpho-physiological analysis among 53 genotypes divulged the existence of drought tolerance capability in studied genotypes.Result: On the basis of current findings, it can be concluded that drought stress retards the growth and metabolic activity of soybean genotypes. These parameters showed considerable amount of variability under drought stress at different growth stages in soybean. Among 53 soybean genotypes, four genotypes viz., JS97-52, AMS 2014-1, RVS-14 and NRC-147 was found to be drought tolerant.


Author(s):  
Titik Sundari ◽  
Dan Siti Mutmaidah

<p>Intercropping is one way of increasing land productivity. The research was aimed to determine the suitability of soybean promising lines for maize + soybean intercropping based on land productivity assessed by land equivalent ratio (LER). The research was conducted at Kendalpayak Station Research, Malang, in February to May 2016, using factorial randomized block design, repeated three times. The first factor was cropping system (monoculture and intercropping), the second factor was 55 soybean genotypes. Spacing for maize in the intercropping system was 2.2 m x 0.5 m x 0.2 m, and for soybean was 0.35 m x 0.10 m. In monoculture, spacing for maize was 0.75 m x 0.25 m and for soybean was 0.35 m x 0.10 m. The results showed there was five genotypes suitable for intercropping of maize + soybean based LER value, ie G//IT7-3, M0706//MI196-3, M0706//MI197-4, M0706//MI199-1, and M0706//MI199-2, with LER value of more than 1. Intercropping of maize with these soybean lines, gives a higher land productivity than monoculture.<br /><br />Keywords: Glycine max (L.) Merrill genotype, monoculture, land equivalent ratio, Zea mays <br /><br /></p>


2013 ◽  
Vol 46 (4) ◽  
pp. 47-56 ◽  
Author(s):  
O. Sofalian ◽  
P.B. Miandoab ◽  
A. Asghari ◽  
M. Sedghi ◽  
A. Eshghi

ABSTRACT This study was conducted to evaluate the salinity tolerance in seedling stage of soybean (Glycine max L.). Factorial experiment was done based on randomized complete block design with three replicates. 17 soybean genotypes were used in three salinity stress levels (consisting of control, 75 mM and 150 mM NaCl stress). The experiment was carried out in a greenhouse condition and proline, sodium, potassium, and chlorophyll a, chlorophyll b, chlorophyll a/b and total chlorophyll content were examined. To create salinity stress, NaCl was used in the experiment. The results revealed that different salinity stress had significant effects on all traits except for chlorophyll b and chlorophyll a/b. The cluster analysis in the control and at 75 and 150 mM salinity levels classified genotypes into two, two and three groups respectively. In each condition, the dpx and clean genotypes were placed in a group which the average traits were higher than the other genotypes. This can be generalized to the conditions of control as well as 75 and 150 mM salinity stress. Regression analysis showed possible informative loci encoding protein markers that was probable potential for selection strategies for salt weather proved by complementary tests.


2018 ◽  
Vol 21 (5) ◽  
pp. 435-441 ◽  
Author(s):  
Sina Ghanbari ◽  
Ahmad Nooshkam ◽  
Barat Ali Fakheri ◽  
Nafiseh Mahdinezhad

Agromet ◽  
2017 ◽  
Vol 31 (1) ◽  
pp. 43
Author(s):  
Pono Ngatui ◽  
. Handoko ◽  
Bregas Budianto ◽  
Marliana Tri Widyastuti

<p>Solar radiation greatly affects the development of plant biomass. The process of plant development is complex. Here, we simplified this complexity through modeling experiment by integrating climate variables. This study aims to determine the dynamics of canopy intercepted solar radiation under soybean (<em>Glycine Max (L.) Merrill</em>). We employed the shierary-rice model to calculate plant biomass. The results showed that intercepted radiation continuosly increased during vegetative phase, whereas the radiation remains constant during generative phase. Our observation confirmed that the pattern of intercepted radiation followed the angular pattern of sunlight. The intercepted radiation was optimum at 10:00 to 14:00 pm, and it was used to form the plant dry matter. We found that the intercepted radiation contributed until 12%. Based on this contribution, we built our crop model of soybean biomass. Our model performed well in simulating dry biomass with high R<sup>2</sup> (0.9), and as indicated by the plot 1:1 between dry matter of model and field observations. Further, the result of t test between model and observed data confirm this strong corelation (<em>p-value</em> 0.07).</p>


2018 ◽  
Vol 45 (3) ◽  
pp. 263
Author(s):  
Endriani , ◽  
Munif Ghulamahdi ◽  
Dan Eko Sulistyono

Soybean (Glycine max L. Merrill) demand is high in Indonesia, however national production is low, therefore improving productivity is important. The research was aimed to determine the effect of application of biofertilizer containing N- fixing and P- solubilizing bacteria on the growth and production of soybean in lowland swamp. The experiment was conducted  at  Labuhan Ratu VI Village, District of Labuhan Ratu, East Lampung Regency from September to December 2014. The experiment was arranged in factorial randomized block design with three replications. N and P fertilizers were applied in four levels. Doses of N were 0, 11.25, 22.50, 33.75 kg ha-1, doses of P were 0, 36, 72, 108 P2O5 kg ha-1, in combination with and without biofertilizer application. The results showed that interaction between biofertilizer and N significantly affected number of branches and number of leaves at maximum vegetative phase. The influence of three types of fertilizer had no significant effect on the productivity of soybean in lowland swamp with soil pH of 7.0 and medium soil fertility. It is recommended to apply Biofertilizer + 11,25 kg N ha-1 + 36 kg P2O5 ha-1 to obtain high soybean production in lowland swamp area.<br /><br />Keywords: nitrogen, phosphate, productivity, soil fertility<br /><br />


In some rice dominated tropical regions, such as in Indonesia, soybeans are an increasingly important dry season crop which are often exposed to periods of drought stress. The morphological and physiological responses, which could lead to some tolerance to water stress, may vary between varieties. By better understanding the plant response to drought stress and finding if these responses vary between varieties better dry season production could be achieved. An experiment was conducted to compare the response of four varieties of soybean (glycine max (l.) Meer.) to five watering regimes, with the objective of determining the response of common soybean varieies across a wide range of water supply. Plant response to water supply was measured using gas exchange measurement with the rate of photo synthesis decreasing progressively from well watered to dry conditions across the four varieties. A correlation of stomatal conductance and transpiration rate has a close relationship with photosynthetic rate, where stomatal conductance of Burangrang variety has higher value than other varieties. Varieties Burangrang and Argomulyo stomatal conductances are higher value than those of Anjasmoro and Grobogan varieties. In a deficit of water condition, the Argomulyo varieties have a higher value of transpiration efficiency and significantly different than the other three varieties. The transpiration efficiency significantly declined for treatments watered once every two or three weeks. The transpiration efficiency values of Agromulyo and Burangrang varieties were significantly higher than another varieties.


2017 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Siti Rodiah ◽  
Zulfatunnisa Zulfatunnisa ◽  
Sumadi Sumadi ◽  
Anne Nuraini ◽  
Meddy Rachmadi ◽  
...  

The variation of the seed size in each species and individuals might be from of difference species adaptation for  a difference environment. This difference may also arise from the constraints of limited formation of seed size. The use of adaptive ciltivars on the growth environment is very influential on the succes in the farm field. This research was aimed to find the adaptation of phase and size seed of two cultivars of soybeans in Jatinangor and Cikajang. This research was held in Jatinangor (Sumedang regency) and Cikajang (Garut regency) from April to July 2016. The design that used in this research was Randomized Block Design (RBD) and Duncan at 5% rate. Improved cultivars that tested in this research were placed at Grobogan and Anjasmoro which were repeated 5 times. The results of experiment showed that adaptation of size seed showed of 100 grains and large seeds. The low temperature condition can increase of variability of seed size. Heterogeneity of environment can not sustain the size of soybean seed. Genetic and environment factors influence significantly for weight of 100 grains and seed size Grobogan in Jatinangor. The weight of 100 grains Grobogan in Jatinangor and Cikajang haved a greater than Anjasmoro. Environmental factors influence yield of soybean, weight of 100 grains of cultivars in Cikajang haved a greater than Jatinangor caused by the seed size.


2020 ◽  
Vol 11 ◽  
Author(s):  
Yeon-Ki Kim ◽  
Songhwa Chae ◽  
Nam-Iee Oh ◽  
Nguyen Hoai Nguyen ◽  
Jong-Joo Cheong

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