• 한국작물학회지
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• 제43권2호
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• pp.105-112
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• 1998

Seeds of medicinal soybean [Glycine max(L.) Merill] are characterized by a black seed coat, white stripe at hilum border, yellow cotyledon, and very small seed weight. Production of this medicinal soybean has recently increased as a consumption increased. The objective of this study was to evaluate the growth characteristics and seed yield of collected medicinal soybeans and to obtain basic information on production practices and breeding materials. The collected medicinal soybean lines were cultivated at three locations for two years. Twenty-seven lines were planted at the Research Farm, Korea University, Namyangju city, on May 23, and at the Research Farm, Kyungpook National University, Taegu, on May 20, 1995. In 1996 field experiments, forty-four lines were planted on May 25, at Research Farm, Korea University, and twenty-seven lines among those were planted on June 7 at the Research Farm of National Yeongnam Agricultural Experiment Station, Milyang city. The investigated lines had purple or white flower. Flowering and maturing dates were similar or later than those of the control cultivars. Branch number was greater for the investigated lines. One hundred-seed weight of the lines ranged from 8.5 to 15.0 g. Mean seed yields ranged from 1.54 to 2.89 MT/ha. Nine lines of the investigated medicinal soybeans showed higher yield capacity than the control cultivars. Further research should be done on the improvement of the production system and breeding program of medicinal soybeans.

• Current Research on Agriculture and Life Sciences
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• 제22권
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• pp.1-12
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• 2004

Pod-edible bean or snap bean is a fairly new crop to domestic farmers but the national demand is steadily increasing in recent years along with the development of western food business and change in dietary patterns. At the same time, much efforts are being made to export it to foreign country, mainly to Japan. The amount of seeds introduced from outside is also continuously increasing along with the enlargement of area planted for the crop. Hybridization breeding for the crop has already been started to supply the cheaper and better seeds which will reduce the seed costs and foster the higher income to the farmers. In this experiment, several technologies related with the production of quality seeds are preliminary investigated. Some of the results obtained are summarized as follows; 1. Highly significant interaction was recognized between planting dates and no. of pods per plant and no. of branches but no interaction between planting dates and plant height and no. of nodes on main stem. Days to maturity was proportionally reduced to later planting dates. 2. Rate of viviparous pods and seeds was gradually increased in later planting dates but rate of germination was increased in earlier planting dates with lower germination rate in white seed coat grains than in colored seed ones. 3. Seed yield was higher in the earlier planting dates with a great deal of varietal difference. Early to mid April was considered to he the optimum planting dates for snap bean in Kyungbuk area. High correlation was recognized between seed yield and no. of pods per plant, no. of seeds per plant, and 100 seed weight. 4. Days to flowering was three and seven days longer in Cheongsong, high mountainous area than in Kunwi, somewhat prairie lowland. One hundred seed weight was also higher in Cheongsong than in Kunwi. Rate of viviparous grains, pods, and decayed seeds was higher in Cheongsong but, at the same time, the rate of germination and seed yield was also higher in Cheongsong. 5. One hundred seed weight of KLG5007 increased continuously up to 35days after flowering and decreased thereafter but that of KLG50027 increased to 40days after flowering and slowly reduced thereafter. The content of crude oil reached to maximum at 40 days after flowering and reduced thereafter. The rate of germination in Gangnangkong 1 was the highest, 89.3%, at 35 days after flowering and reduced thereafter while that in KLG50027 reached to maximum, 70.7%. at 40days after flowering and reduced thereafter. Thus, the optimum harvesting time for snap bean was considered to be 35~40days after flowering. 6. The snap bean pods at yellow bean stage easily became viviparous ones under saturated moisture conditions for 24 hours at $25{\sim}30^{\circ}C$. Therefore, it is recommended to harvest pods somewhat earlier than yellow-bean stage and let them do post maturing, especially when it is to be rained.

• 한국작물학회지
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• 제49권2호
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• pp.73-81
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• 2004

Effects of ambient and elevated $\textrm{CO}_2$ and high temperature, and their interactions with zero and applied nitrogen supply (NN-no nitrogen and AN-applied nitrogen) were studied on soybean (Glycine max L.) in 2001. In this experiment, elevated $\textrm{CO}_2$ (650 $\mu\textrm{mol}.\textrm{mol}^{-1}$) and temperature (+$5^{\circ}$) increased total dry mass at final harvest by 125% and 119% and seed weight per plant by 57% and 105% for NN and AN plants, respectively. Although the influence of temperature and temperature x $\textrm{CO}_2$ were not significant, the influences of $\textrm{CO}_2$ concentration and temperature x $\textrm{CO}_2$ concentration were significant on total dry weight and seed weight, respectively. In particular, seed weight per plant was increased, while weight per one hundred seed weight was decreased with elevated $\textrm{CO}_2$ and temperature. The N supply increased biomass and seed weight per soybean plants. The results of this study suggest that the long-term adaptation of soybean growth at an elevated $\textrm{CO}_2$ concentration and high temperature might potentially result in a increase in dry matter production and yield.

• Plant Breeding and Biotechnology
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• 제6권4호
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• pp.454-462
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• 2018

Yield and grade are the key factors that affect production value of peanut. The objective of this study was to identify QTLs for pod yield, hundred-seed weight, and total sound mature kernel (TSMK). A total of 90 recombinant inbred lines, derived from Tamrun OL07 and a breeding line Tx964117, were used as a mapping population and planted in Brownfield and Stephenville, Texas. A genetic map was developed using 1,211 SNP markers based on double digest restriction-site associated DNA sequencing (ddRAD-seq). A total of 10 QTLs were identified above the permutation threshold, three for yield, three for hundred-seed weight and four for TSMK, with LOD score values of 3.7 - 6.9 and phenotypic variance explained of 12.2% - 35.9%. Among those, there were several QTLs that were detected in more than one field experiment. The commonly detected QTLs in this study may be used as potential targets for future breeding program to incorporate yield and grade related traits through molecular breeding.

• Journal of Plant Biology
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• 제22권1_2호
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• pp.1-4
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• 1979

Wild soybean plants(Glycine ussuriensis) collected from Korea(47 strains) and abroad(41 strains) were grown under field condition and classified according to the growth habit. Seeds were analyzed for protein content. The results were as follows: 1. Wild soybean plants were classified into three groups each by seed size, growth habit of stem, leaf size and flowering time. 2. Seed protein was higher in the strains with large leaves, tendril, stem or late flowering. 3. Glycine gracilis, supposed to be the intermediate species between cultivated and wild soybean(according to the stem growth habit, straight or semitendril, and seed size) was medium in protein content of seeds. 4. The average protein content of Glycine ussuriensis, 43.2%, was highest in comparison with those of others such as G. gracilis, 37.5%, or G. max, 36.2%. 5. One hundred seed weight of Amphicarpaea trisperm, similar to the wild soybean, was almost same as Glycine ussuriensis, but protein content of this species was lower than wild soybeans.

• 한국작물학회지
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• 제58권4호
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• pp.383-387
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• 2013

콩 품종육성에 있어 잎의 크기가 종실무게와 관련된 형질의 초기 분리세대에서 조기선발 지표로서 활용 가능성을 구명하고자 재래종, 도입종 및 야생종 등 229개 품종 및 유전자원을 대상으로 단엽과 제1본엽 및 제3본엽과 종실 무게와의 상관관계를 조사 분석한 결과를 요약하면 다음과 같다. 1. 시험재료 229개 품종 및 유전자원의 단엽 면적은 $3.2{\sim}33.8cm^2$, 제1본엽 면적은 $9.2{\sim}29.5cm^2$, 제3본엽 면적은 $7.2{\sim}58.9cm^2$, 종실의 100립 무게는 2.7~39.0 g의 범위를 나타내었다. 2. 엽 면적과 종실 무게간에는 높은 정의 상관이 있었고, 상관의 크기는 단엽(r=$0.80^{**}$), 제1본엽($0.75^{**}$), 제3본엽($0.67^{**}$) 순으로 나타났다. 3. 엽의 장폭과 종실무게 사이에는 유의한 정의 상관이 있었고 단엽의 길이(0.71)와 폭(0.79)이 제1본엽, 제3본엽 보다 상관이 높았으며, 엽장보다는 엽폭이 높은 상관을 보였다. 조사된 콩 잎의 장 폭비는 상위엽이 높았다. 4. 콩 종실크기와 관련된 생육 초기선발의 간접지표로서 단엽 크기와 단엽의 폭을 이용하는 것이 제일 유리할 것으로 판단되었다.

• 한국작물학회지
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• 제34권4호
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• pp.440-448
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• 1989

우리나라의 남부해양지방에서 국내 대두의 재래종 88품종과 육성종 30품종을 공시하여 파종기가 주요 형질 및 입종변이에 미치는 영향을 검토하였던 바 그 결과를 요약하면 다음과 같다. 1. 파종기가 5월 1일에서 7월 15일까지 15일 간격으로 늦어짐에 따라 개화일수는 단축되었으며 개화시엽수, 경자 및 주경절수도 점차 감소하는 경향이써는데 품종의 조만성에 따라 다르게 나타났다. 2. 입중은 파종이 늦어짐에 따라 대체적으로 감소하는 경향이었는데 특히 조·중생종에서 뚜렷하였다. 3. 파종기 이동시 입중과 개화일수, 개화시엽수, 경장, 주경절간에는 정의 유의상관이 있었고 그 중 개화시 엽수와의 상관이 가장 높았다. 4. 파종기 이동에 따른 입중의 변이 양상을 5개 유형으로 분류할 수 있었는데 1) 파종이 늦어짐에 따라 입중이 점차 감소하는 제I유형, 2) 파종이 지연되어도 변화가 거의 없는 제II유형, 3) 파종이 늦어지면 증가하는 제III유형, 4) 파종이 늦어지면 점차 증가하다가 다시 감소하는 제IV유형 및 5) 파종이 늦어지면 감소하다가 다시 증가하는 제V유형이었다.

• 한국작물학회지
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• 제42권3호
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• pp.333-337
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• 1997

땅콩의 육종년한을 단축하기 위한 세대촉진 방법을 정립하고자 포장후건에서 신대광땅콩 및 남대땅콩을 재배하고, 자방병이 지하로 침투한 후부터 80일까지 10일 간격으로 꼬투리와 종실을 재취하여 그 크기와 무게, 수분함량의 변화를 추적하는 동시에 종실의 발아율과 발아한 유묘의 활력을 조사한 결과, 자방병이 지하로 침투한 후 30∼40일에 꼬투리와 종실의 크기가 완성되었고, 이 때에 수확한 종실은 100％ 발아력을 갖추며 발아 후 활력있는 유묘를 생산할 수 있는 것으로 나타났다.

• 한국약용작물학회지
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• 제22권6호
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• pp.435-441
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• 2014

This study was conducted to investigate the quality of seeds, the germination rates and the days required for germination, to examine the patterns of protein expressions during the germination and to improve the techniques of managing and storing seeds and viability of the seeds of Lithospermum erythrorhizon Sieb. et Zucc. After collecting and harvesting seeds, they were classified to white and brown colors of seed coat through testing their seed size, weight, and quality. The germination rates, the days required for germination, and the protein expressions were examined with different colors of seed coats, storing temperatures and durations by treating the different plant growth regulators and primings. One hundred seed weight of white color was heavier about 1.17 g than those of brown one about 0.81 g. The germination rates in white color of seed coat was higher, 3.05 ~ 5.75%, than those in brown one. Its rates were decreased with getting longer in storage durations. There was no big differences on germination rates between storage temperatures. The plant growth regulator of $GA_3$ and Kinetin was affected to improve the seed germination. $GA_3$ increased the seed germination clearly at 25 ppm level, while kinetin increased it gradually from 25 to 100 ppm levels. In germination by seed primings, PEG6000 made higher germination rate with increasing their levels, whereas $KNO_3$ increased the germination until 100 mM level and then decreased it with 200 mM unlike PEG6000. The protein expressed during the seed germination were appeared more and clearer bands in the seed after germination, especially 20 ~ 30 kDa, compared to those in the seed before germination. These results showing more and clearer bands were positively related to the germination rates which were different by seed colors, storage temperatures and durations, and plant growth regulators and primings.

• 한국작물학회지
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• 제45권2호
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• pp.97-102
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• 2000

This experiment was conducted to investigate the changes of harvest index and the relationship between harvest index and yield determination factors by different planting times in the determinate soybean cultivars, Shinpaldal and Danbaeg. Optimum planting were 23 May in 1995 and 1996. Late planting were 13 June in 1995 and 6 June in 1996. Growth period from planting to physiological maturity (R7) was shortened as planting time was delayed in two cultivars due to shortening of reproductive growth period in Shinpaldal, and of vegetative growth period in Danbaeg. Stem weight was distinctly decreased in late planting compared to optimum planting, but seed weight of both cultivars was not different between planting times. Also, seed number per pod and harvest index were significantly increased in late planting and the high correlation was found between two factors. It was suggested that increase of harvest index in late planting would be related with high assimilate use efficiency due to increase of sink capacity. The results of correlation and principal component analysis for yield determination factors showed that main factor on yield determination was pod number per plant at R5 stage associated with dry matter accumulation during early reproductive growth period, seed number per pod and harvest index were the second factor, and one hundred seed weight was the third factor. The result of this experiment indicated that yield determination in soy-bean was dependent mainly on pod number per plant related to dry matter accumulation by early reproductive growth period, and the increase of seed number per pod and harvest index could compensate for yield decrease by shortening of vegetative growth period in late planting. Such result suggests that optimum planting date can be delayed from mid May to early June in improved soybean cultivars in Korea.