Resource allocation in relation to meiotic system in two species of Artemisia from North-West Himalayas

Figures & data

Figure 1. Flowers and seeds of A. nilagirica and A. scoparia. (A) Capitulum of A. scoparia; (B) capitulum of A. nilagirica; (C) ray florets of Artemisia; (D) sterile pistil of A. scoparia; (E) fertile pistil of A. nilagirica; (F) seeds of A. scoparia; (G) seeds of A. nilagirica.

Table 1. Data on pollen viability, seed set and reproductive effort.

	Treatment	Species
		A. nilagirica		A. scoparia
		Jammu population	Rajouri population
1	Percentage pollen viability (n = 50)	47.77 ± 1.36	90.60 ± 1.17	94.2 ± 0.59
2	Seed set (%)
2a	Open pollination (n = 80)	21.38 (2.6% healthy)	51.2 (46.7% healthy)	74.6 (40.5% healthy)
2b	Bagging
2b(i)	Single capitulum (n = 50)	—	—	—
2b(ii)	9–10 capitula (n = 50)	20	39.4	65
3	SRE% (n = 25)	14.29	21.6	32.3
4	VRE %(n = 25)	29.35	8.87	16.71

Figure 2. Pollen mother cells at different stages of meiosis. (A, B) A. scoparia at diplotene and anaphase I. (C, D) A. nilagirica (Rajouri population) at diakinesis and anaphase I; (E) A. nilagirica (Jammu population) at metaphase I; (F) associations at diakinesis (2IVs + 13IIs); (G) anaphase I; (H) laggard at anaphase I.

Table 2. Recombination index in species of Artemisia.

	Characteristics	Species
		A. nilagirica		A. scoparia
		Jammu population	Rajouri population
1	Haploid chromosome number (n)	17	27	8
2	Chiasmata frequency per cell (CF)	29.8	43.4	14.9
3	Recombination index(n + CF)	46.8	70.4	22.9