Identification of QTL Combinations that Cause Spikelet Sterility in Rice Derived from Interspecific Crosses

Rice

Table 1 Segregation ratio of spikelet fertility (SS) in the tested 225 lines

Reference point (RF)	Seg	No. of plants				X² value
Reference point (RF)	Seg	Fertile	Moderate	Sterile	Total	1:2:1	9:3:4
RF-I	F:M:S	130	52	43	225	132.4**	5.49^ns
RF-II	F:M:S	130	31	65	225	156.4**	4.97^ns
RF-III	F:M:S	130	20	75	225	179.0**	18.01**

Seg.: segregation of spikelet fertile classified into three classes: F (Fertile), S (Sterile), and M (Moderate fertile) according to reference point (RP) distinguish fertility from sterility. RF-I (F: M: S = over 85%: 85–45%: less than 45%), RF-II (F: M: S = 85: 85–55: 55), RF-III (F: M: S = 85: 85–65: 65)
^nsNot significant
Significant levels: *P < 0.05 and **P < 0.001