Effects Of Different Ecological Environments On Potato Tubers Potassium Content And Genetic Analysis Of Main Traits

The potato quality breeding is one of the important research content. Potato quality traits arecontrolled by complex minor multiple genes quantitative traits, any number of characters islargely depend on external conditions, breed characteristics, natural climate condition, soilfertility, cultivation management techniques and tuber maturity, etc. The same species The samespecies in different environments and climatic conditions，there are differences, such as thediurnal and rainfall factors will have a huge impact on the quality traits of potato. Potato breedingmust also be under certain ecological conditions, in order to obtain good results. Using450potatoclones（varieties）as materials, We analyzed variance, frequency and Genetic Analysis about themain agronomic, yield and quality of5crosses,they are come from6parents.The results showedthat:1.0945（大西洋×东农07-23230）have s suitable plant height and main stem number, Nehedistric have advantage in choosing high main stem number Clonal material. selecting andevaluating their offspring wouldconsider the impact of environmental.2.0945（Atlantic×Dongnong07-23230）were considered to be the high yield and the mosttuber number per plant crosses ALL the crosses marketable tuber percentage are have highmarketable tuber percentage Mudanjiang district prefer to show high marketable tuber percentageand average tuber weight.per plant.3.0945（Atlantic×Dongnong07-23230）were high in specific gravity; The difference ofspecific gravity was not significant in the there district, Environmental conditions affect a smallspecific gravity.0943（1533×T1800）performed well for their low reducing sugar contents,Haerbin district is easier to filter out the low reducing sugar clonal material;0937（T1800×1533）were showed high potassium content,Nehe district prefer to choose High potassium conten clonalmaterial; protein content have a small degree of variation relatively stable,0943（1533×T1800）were showed high protein content;have no significant effect in the three distrct, protein contenabout12%.4. In order to improve tuber number per plant,specific gravity and protein content,wo canselect some varieties with high general combining ability as parents; Improved marketable percentage,we can select varieties with high general combining ability as a parent in certaincircumstances.; The improvement of plant height and main stem number select crosses with highspecific combining ability as parents; Improving mean tuber and potassium conten need to selecthigh special combining ability as parents in certain circumstances.Have significant and verysignificant positive additive effect were that: P1（Atlantic）for tuber number per plant andspecific gravity, P4（Dongdong305）for the marketable tuber percentage P5（Yan97-8）for proteincontent, P6（Dongnong07-23230）for mean tuber weight, tuber number per plant and specificgravity, Crosses with significant and very significant positive dominant effect were that:0937(T1800×1533)for potassium content.0945(Atlantic×Dongnong07-23230)for plant height,yield per plant and potassium content.