By the software Mapmaker/3.0, the OPF-14,OPD-11,OPI-01 markers were tested to be linked to the cold tolerance with genetic distance of 6.1 cM,9.8 cM ,12.3 cM respectively.
以MAPMAKER软件计算出耐冷基因片段与OPF-14 、OPD-11、OPI-01标记间的遗传距离分别为6.1 cM,9.8 cM ,12.3 cM。
The QTLs related to cold tolerance at the booting stage were detected on chromosome 1, 2, 4, 11 and 12, respectively, which explained 5.6%-8.2% of the observed phenotypic variance.
The QTLs related to relative cold tolerance at the booting stage were detected on chromosome 1, 3, 4 and 11, respectively, which explained 5.9%-10.3% of the observed phenotypic variance.
The same result was found in F2, F3 hybrids, The hybrids from the parents with high. tolerance to cold, such as Hefu 84-480×Ha 83-3331 showed the best resistance to cold during germination.
in the years 1987-1990, 60 soybean germplasms from northeast part of China and hybrids in F2 and F3 from 6 parents with different tolerance to cold were identified for the resistance to cold during the germination.
The results showed that the tolerance to cold in germination varied signficantly in soybean germplasms. Among them, Ha83-3331, Hejiao 83-1698, Hefeng 27, Hefu 84-480, Shui 82-203, Neidou 1 were identitied to have high tolerance to cold.
300 μmol·L-1 of SA could increase the heat tolerance of maize seedlings under 46℃ for 2 d and 150 μmol·L-1 of SA could enhance the chilling tolerance under 1℃ for 5 d.
However, pharmacological induction of thermoregulatory tolerance to cold without excessive sedation, respiratory depression, or other serious toxicity remains a major focus of current therapeutic hypothermia research.
The effects of depletion of the serotonin precursor,l-tryptophan, on the threshold and tolerance to cold pressor pain, and the analgesic effect of morphine (10 mg intramuscularly), were tested in a double blind trial on human volunteers.
Using polyacrylamide gel electrophoresis with the staining of the enzymes,the constitutive isoenzyme components of peroxidase and esterase in three subtropical crops i.e., rice (Oryza sativa L. subsp. Hsien, Ting), cucumber (Cucumis sativa L.) and Agave (Agave sp.) with different degrees of tolerance to chilling temperature were studied.The isoenzyme of peroxidase exhibited significant variation in the three species studied as well as in the cultivars within the species. It was found that the number of comp...
Cold injury which influence riee production in different rice growing countries oc- curs at various growth stages.The degree of cold injury depends on the air or water temperature,the cropping pattern,the growth stage of the rice and other factors.It is generally aeeepted that cold tolerance of rice at one stage is different from another stage.However,Okabe and Toriyama reported that varieties seem to respond simi- larly to cold temperature at different growth stages.Some varieties have been found to be tol...
The cold tolerance of maize local varieties,hybrids and inbred lineswas evaluated at different growth stages under natural and controlled lowtemperature conditions.The results indicated that the differences in coldtolerance of various maize genotypes were represented by the followingindices.germinating energy,seedling emergence,temperature response,dry and fresh weight of seedling,rate of grain filling,dry matteraccumulation of grain and cell membrane permeability.Under the givenlow temperature condition co...