There was highly significant correlation between oil content in seed ker-nel and kernel percentage(r=0.678~**). The correlation coefficientsbetween total amino acid content in seed kernel and seed index(r=0.504~*),and kernel index( r=0.447*)were significant too.

The negative correlation between ratio of kernel and coat, kernel percentage, coat index, seed index and protein content of kernel was weaker than the positive correlation between ratio of kernel and coat, kernel percentage, coat index, seed index and oil content of kernel, respectively.

Genetic model for diploid plant seeds and its analysis approaches were applied for estimating the genetic variance and covariance components and genetic correlation of cotton seed density and kernel percentage at four developmental stages (20,30,40 and 50 days after blooming).

For kernel percentage,the main component was of cytoplasm effects at 20 days after blooming,but of maternal dominance effects at 30 days and 40 days after blooming. All highly significant effects were detected at seed maturing.

The results indicated that the inhibiting blooming percentage have been maintained above 80% for 45 days after fullbloom stage leaf spray application of HWPA with 700 times extender(50Kg/mu) but shale yield and kernel percentage and kernel yield was increased 7.18% and 2.49% and 9.7% respectively.

Studiy were conducted in terms of the main quantititive characters of fruits of 149 wild jujube accessions. Great variation were showed between these characters with the variation coefficient of 6.94%-56.18%. Double kernel percentage,average fruit weight and content of titratable acids showed biggest variation with the variation coefficient of 56.18%、55.82% and 55.49% respectively.

The fruit branches number and main-stem hight have greatest direct influence on the pods output. The total number of pods and two-kernel percentage have minor direct influence on the pods output. The kernel percentage and the weight of hundred pods express negative influence on the pods output.

The maximum of respiratory rates were at 330170. 3. There were obvious differences in the respiratory rates of nuts at different harvest dates. The respiratory rates of nuts varied positively with the average kernel percentage and the lipid content of the kernel.

Application of 1 μmol/L ACC to panicles at mid and late grain filling stages significantly loosened amyloplast arrangement and increased chalky kernel percentage, chalky area and chalkiness of rice, and the results were reversed when 1 μmol/L amino-ethoxyvinylglycine, an inhibitor of ACC synthetic enzyme, was applied to panicles.

yet for the higher-yield population, the characteristics mainly were higher both of cob weight and kernel percentage produced (kernel weight/ear weight).

The results show that 1000 grain weight,rows per ear,ear diameter,kernels per row and kernel percentage have higher positive correlation with kernel yield and the first two are most important.

On the basis of quality data including protein content,wet gluten content and quality,carotenoid pigment content and yellow kernel percentage and so on.

Number of normal and empty seeds per head, weight of thousand seeds, kernel percentage, oil percentage and protein content were determined.

Moreover, there were no significant reductions in kernel dry weight or kernel percentage.

Seed yield had significant correlations with oil content and kernel percentage under normal irrigation regime, while these correlations were largely reduced under stress conditions and were not significant.

Nut quality expressed in kernel percentage was not affected significantly by orchard thinning.

In1998, a low nut production year, we observed an increasing trend for kernel percentage.

The elementary characters of high-yielding genotype were investigated for two corn hybrid populations constituted by single-crosses with ordinary-and higher-levels of kernel yield ((?)=125.14 and 159.33 grams per plant) respectively. The statistical procedure of path analysis combined with stepwise regression was applied. The results showed that the characteristics of high-yielding genotype varied with the yield level of populations. For the ordinary-yield population, the principal characteristics were longer...

The elementary characters of high-yielding genotype were investigated for two corn hybrid populations constituted by single-crosses with ordinary-and higher-levels of kernel yield ((?)=125.14 and 159.33 grams per plant) respectively. The statistical procedure of path analysis combined with stepwise regression was applied. The results showed that the characteristics of high-yielding genotype varied with the yield level of populations. For the ordinary-yield population, the principal characteristics were longer ear length, bigger ear diameter and higher weight of kernel;yet for the higher-yield population, the characteristics mainly were higher both of cob weight and kernel percentage produced (kernel weight/ear weight). However, cob weight and kernel percentage had a highly negative correlation (α<0.01). This suggests that to improve the yield level of the higher-yield population will be much more difficult than that of the ordinary-yield one.

The contrast of kernel percentage of peanuts, fruit-branch number, weight of hundred pods and the total number of pods differs among different plants. The ability of heredity is also large. The total number of pods, two-kernel percentage, kernel percentage and main-stem hight correlate the pods output with the heredity. The contrast of fruit-branch number correlated with the pods output heredity is also obvious. The fruit branches number and main-stem hight have greatest direct influence on...

The contrast of kernel percentage of peanuts, fruit-branch number, weight of hundred pods and the total number of pods differs among different plants. The ability of heredity is also large. The total number of pods, two-kernel percentage, kernel percentage and main-stem hight correlate the pods output with the heredity. The contrast of fruit-branch number correlated with the pods output heredity is also obvious. The fruit branches number and main-stem hight have greatest direct influence on the pods output. The total number of pods and two-kernel percentage have minor direct influence on the pods output. The kernel percentage and the weight of hundred pods express negative influence on the pods output.

The oil and amino acid contents in seed kernel of four parents andtheir F_1 hybrids in upland cotton(Gossypium hirsutum L.)were studiedby diallel analysis.Heterosis and genetic effects of these traits wereanalysed,and correlation coefficients among some seed traits were alsoestimated.There were positive heterosis(4.75%)for oil content andnegative heterosis(-3.60%)for total amino acid content in seed kernel.These two traits had large dominance variances(H_1, H_2)than theiradditive variances(D).It is suggested...

The oil and amino acid contents in seed kernel of four parents andtheir F_1 hybrids in upland cotton(Gossypium hirsutum L.)were studiedby diallel analysis.Heterosis and genetic effects of these traits wereanalysed,and correlation coefficients among some seed traits were alsoestimated.There were positive heterosis(4.75%)for oil content andnegative heterosis(-3.60%)for total amino acid content in seed kernel.These two traits had large dominance variances(H_1, H_2)than theiradditive variances(D).It is suggested that they are controlled by do-minance genes,and the dominance genes of oil contents show positiveeffects,and that of total amino acid contents show negative effects.There was highly significant correlation between oil content in seed ker-nel and kernel percentage(r=0.678~**).The correlation coefficientsbetween total amino acid content in seed kernel and seed index(r=0.504~*),and kernel index( r=0.447*)were significant too.Heterosisand genetic parameters of all amino acids,excluding methionine,weresimilar to those of total amino acid content.