Study on seed germination of Oryza rufipogon

Ｏｒｙｚａｒｕｆｉｐｏｇｏｎ，ｄｉｓｔｒｉｂｕｔｅｄｉｎｔｒｏｐｉｃａｌａｎｄｓｕｂｔｒｏｐｉｃａｌｒｅｇｉｏｎｓｉｓａｎｉｍｐｏｒｔａｎｔｇｅｒｍｐｌａｓｍｆｏｒｒｉｃｅｂｒｅｅｄｉｎｇ．Ｄｏｎｇｘｉａｎｇ（２８°１４′Ｎ，１１６°３６′Ｅ）ｉｓｔｈｅｎｏｒｔｈｅｒｎｍｏｓｔａｒｅａｏｆｔｈｉｓｓｐｅｃｉｅｓｒｅｃｏｒｄｅｄｉｎｔｈｅｗｏｒｌｄ，ａｎｄＣｈａｌｉｎｇ（２６°５０′Ｎ，１１３°４０′Ｅ）ｉｓｎｅａｒｔｏｔｈｅｎｏｒｔｈｅｒｎｒａｎｇｅｌｉｍｉｔ．Ｓｅｅｄｄｏｒｍａｎｃｙｃｏｍｍｏ…     

Rice seed identification by computerized AFLP-DNA fingerprinting

Ｗｅｄｅｖｅｌｏｐｅｄａｃｏｍｐｕｔｅｒｉｚｅｄｓｅｅｄｉｄｅｎｔｉｆｉｃａｔｉｏｎｓｙｓｔｅｍ．ＦｉｆｔｅｅｎｒｉｃｅｖａｒｉｅｔｉｅｓｔｈａｔｗｅｒｅｗｉｄｅｌｙｕｓｅｄｉｎＣｈｉｎａｗｅｒｅａｎａｌｙｚｅｄｂｙＡＦＬＰｆｉｎｇｅｒｐｒｉｎｔｉｎｇ．１２ｐｒｉｍｅｒｐａｉｒｓｗｅｒｅｓｃｒｅｅｎｅｄ．Ｉｎｏｒｄｅｒｔｏｓｉｍｐｌｉｆｙｔｈｅｐｒｏｃｅｄｕｒｅａｎｄｃｕｔｄｏｗｎｔｈｅｃｏｓｔｉｎｓｅｅｄｉｄｅｎｔｉｆｉｃａｔｉｏｎ，ｔｈｅｌｅａｓｔｎｕｍｂｅｒｏｆｐｒｉｍｅｒｐａｉｒｓｆｏｒ…     

Studies on the seed production properties of Hunong 5s／Teqing 2

From Nongken 58s/Laser 4 // Xiandang, a photoperiod-sensitive genie male sterile indica rice line, Hunong 5s was developed, and authorized by Hubei Province in 1992, and by the Committee of the State Science Foundation of China in 1993, Hunong 5s was crossed to a indica restorer line Teqing 2 to produce a twoline F1 hybrid Hunong 5s/Teqing 2.     

The influence of ultra-low moisture content on the seed viability of rice in store

This paper deals with the influence of ultra-low moisture content and the rate of desiceation on rice seed viability and physiological property by desiccating using four kinds of desiooants (phosphorus pentoxide, calcium oxide, calcium chloride and silica gel) with different dosage.     

Long-term sustainability of wood-pasture separation processes—A matter of seed mixtures and management

We studied the performance of different seed mixtures and the influence of liming on the establishment of a montane pasture under acidic site conditions during a wood-pasture separation process from 1998 to 2001 in Styria, Austria. Two treatments (with and without liming) were established, each with four seeding treatments (without seeding, commercial, site-adapted and site-specific mixtures), and all plots were regularly fertilized from 1998 to 2002. Vegetation surveys and forage analyses regarding development of vegetation cover, seeded species persistence, quality and yield parameters were conducted again in 2014 and 2016; soil samples were taken in 2015. After cessation of regular fertilization, the analysed soil parameters declined to levels that were sufficient or low for grasslands. pH decreased again over time, but still was significantly higher (p = .0034) in the liming treatment. The single liming during experimental set-up also caused better long-term performance for nearly all vegetation, quality and yield parameters. The site-specific seed mixture performed best regarding most analysed parameters, under both liming treatments. Concerning seeded species, the habitat-typical species Agrostis capillaris, Festuca rubra agg. and Trifolium repens persisted best with and without liming. All analysed vegetation and yield parameters stayed far behind their results of 2001 and their potential. The use of site-specific seed mixtures supports the establishment of productive grassland on specific locations. The long-term results also illustrated that even low-input management like liming in multi-annual intervals can help to improve acidic site and growing conditions significantly and thereby increases the sustainability of cost-intensive wood-pasture separation processes under similar conditions.     

Effect of seed soaked with urea solution on the cold tolerance of rice seedlings

In the Yangtze river aera, the first crop of indica rice is sown in fate Max to eariy Apt and transplanted in early May. Usually, seedlings perish when abnormal low temperature of 6-10℃ lasted for 3 d or longer. The effect of socking seed with urea solution on increasing the cold tolerance at the seedling stage was studied.     

The variance of ATP level related to hybrid heterosis during seed germination of hybrid rice

To make sure whether the energetic metabolism vigor exists in the germinating seed of hybrid rice or not, and to provide some information for screening of vigorous combination and selective breeding, the interrelationship between the variante of ATP level and the pliysiological activities such as water uptake,